66685 (number)
66,685 (sixtysix thousand six hundred eightyfive) is an odd fivedigits composite number following 66684 and preceding 66686. In scientific notation, it is written as 6.6685 × 10^{4}. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 53,344 positive integers (up to 66685) that are relatively prime to 66685.
Basic properties
 Is Prime? No
 Number parity Odd
 Number length 5
 Sum of Digits 31
 Digital Root 4
Name
Short name  66 thousand 685 

Full name  sixtysix thousand six hundred eightyfive 
Notation
Scientific notation  6.6685 × 10^{4} 

Engineering notation  66.685 × 10^{3} 
Prime Factorization of 66685
Prime Factorization 5 × 13337
Composite numberω(n)  Distinct Factors  2  Total number of distinct prime factors 

Ω(n)  Total Factors  2  Total number of prime factors 
rad(n)  Radical  66685  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 66,685 is 5 × 13337. Since it has a total of 2 prime factors, 66,685 is a composite number.
Divisors of 66685
4 divisors
τ(n)  Total Divisors  4  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  80028  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  13343  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  20007  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  258.23438965405  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  3.3330834208027  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 66,685 can be divided by 4 positive divisors (out of which 0 are even, and 4 are odd). The sum of these divisors (counting 66,685) is 80,028, the average is 20,007.
Other Arithmetic Functions (n = 66685)
φ(n)  Euler Totient  53344  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  13336  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 6646  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  16  The number of ways n can be represented as the sum of 2 squares 
There are 53,344 positive integers (less than 66,685) that are coprime with 66,685. And there are approximately 6,646 prime numbers less than or equal to 66,685.
Divisibility of 66685
m  2  3  4  5  6  7  8  9 

n mod m  1  1  1  0  1  3  5  4 
The number 66,685 is divisible by 5.
Classification of 66685
By Arithmetic functions
 Arithmetic
 Semiprime
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Other numbers
 LucasCarmichael
Base conversion (66685)
Base  System  Value 

2  Binary  10000010001111101 
3  Ternary  10101110211 
4  Quaternary  100101331 
5  Quinary  4113220 
6  Senary  1232421 
8  Octal  202175 
10  Decimal  66685 
12  Duodecimal  32711 
16  Hexadecimal  1047d 
20  Vigesimal  86e5 
36  Base36  1fgd 
Basic calculations (n = 66685)
Multiplication
n×yn×2  133370 

n×3  200055 
n×4  266740 
n×5  333425 
Division
n÷yn÷2  33342.500 

n÷3  22228.333 
n÷4  16671.250 
n÷5  13337.000 
Exponentiation
n^{y}n^{2}  4446889225 

n^{3}  296540807969125 
n^{4}  19774823779421100625 
n^{5}  1318684123730696095178125 
Nth Root
^{y}√n^{2}√n  258.23438965405 

^{3}√n  40.551729864378 
^{4}√n  16.069672979064 
^{5}√n  9.2215862183903 
66685 as geometric shapes
Circle
Radius = nDiameter  133370 

Circumference  418994.21220927 
Area  13970314520.588 
Sphere
Radius = nVolume  1.2421472317405E+15 

Surface area  55881258082.35 
Circumference  418994.21220927 
Square
Length = nPerimeter  266740 

Area  4446889225 
Diagonal  94306.83140685 
Cube
Length = nSurface area  26681335350 

Volume  296540807969125 
Space diagonal  115501.80810273 
Equilateral Triangle
Length = nPerimeter  200055 

Area  1925559518.3326 
Altitude  57750.904051365 
Triangular Pyramid
Length = nSurface area  7702238073.3306 

Volume  34947669368918 
Height  54448.074499165 
Cryptographic Hash Functions
md5  2dfa35ad039cf5a43902276bfc79de63 

sha1  4eef465bd91bf23d8386165e391aef5b90c8c485 
sha256  f93c9252c676521bd8d4f7e783377e798e545ea2bb7e6331fcca4d0409353671 
sha512  c0bedbca033d75d03243b1ba872422104eb9c85750468c1d946f4d610f12822457d6183bb63b5beaf212ca15e4cf9d2fc339c0a2e4a7e47c4d0d9be4f89321f3 
ripemd160  05efabbed420d1d25121f48536d889e44d3c7229 