668721856 is an even 9-digits composite number following 668721855
and preceding 668721857 . In scientific notation, it is written as 6.68721856 × 10^8.
The sum of its digits is 49. It has a total of 8 prime factors and 28 positive divisors.
There are 303964160 positive integers (up to 668721856) that are relatively prime to 668721856.
668721856 has 28 divisors, whose sum is 1447632360
The reverse of 668721856 is 658127866
Previous prime number is 11
Is Prime? no Number parity even Number length 9 Sum of Digits 49 Digital Root 4
Name
six hundred sixty-eight million seven hundred twenty-one thousand eight hundred fifty-six
Scientific notation
6.68721856 × 10^8
Engineering notation
6.68721856 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 2 × 2 × 11 × 949889
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
8 Total number of prime factors
rad Radical
20897558 Product of the distinct prime numbers
The prime factorization of 668721856 is 2 × 2 × 2 × 2 × 2 × 2 × 11 × 949889.
Since it has a total of 8 prime factors.
4 , 9 , 68 , 80 , 799 , 127 , 2986 , 8210 , 13935 , 49335 , 40156 , 892641 , 1258327 , 8651102 , 30630445 , 43885303 , 38626843 , 350247325 , 6691253133 , 7485944860
n×2
1337443712
n×3
2006165568
n×4
2674887424
n×5
3343609280
n÷2
334360928
n÷3
222907285.33333
n÷3
167180464
n÷5
133744371.2
n2
447188920692084736
n3
2.9904500502785E+26
n4
1.9997793078975E+35
n5
1.3372961303676E+44
2 √n25859.656919611
3 √n874.47723048139
4 √n160.80938069532
5 √n58.216903700724
1 , 2 , 4 , 8 , 11 , 16 , 22 , 32 , 44 , 64 , 88 , 176 , 352 , 704 , 949889 , 1899778 , 3799556 , 7599112 , 10448779 , 15198224 , 20897558 , 30396448 , 41795116 , 60792896 , 83590232 , 167180464 , 334360928 , 668721856
28 divisors
τ Total Divisors
28 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-668721855 Sum of the proper positive divisors of n
A Arithmetic Mean
0.035714285714286 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
1 Returns the nth root of the product of n divisors
H Harmonic Mean
28 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 668721856 can be divided by 28 positive divisors.
The sum of these divisors (counting 668721856) is 1, the average is 0.035714285714286.
Base
System
Value
2
Binary
100111110110111110001011000000
3
Ternary
1201121022120221011
4
Quaternary
213312332023000
5
Quinary
2332143044411
6
Senary
150205010304
8
Octal
4766761300
10
Decimal
668721856
12
Duodecimal
167b53994
16
Hexadecimal
27dbe2c0
20
Vigesimal
a8ja4cg
36
Base36
b25134
md5
f4d9158b06b80c79daf8b1eed3ec76a4
sha1
f98b17c558f01beb8d1fe71690d22b40feac39e6
sha256
b1bf7d62ac42ea6a00fe9ffe6bffe788e65e044e2d681676c8c653a9bc1cb87f
sha512
f20724b0928f7197755634f895325bbefdb63847a7d77af1b83aebb7ec1d254490f96603b177c98a9d6d641d2e252509f244131666d58e5ece8aecc9bc48abdf
ripemd-160
3ac8bb5a621f4fb9811b8e37067e812d7a611bb1
Diameter
1337443712
Circumference
4201703340.2091
Area
1.404885428013E+18
Volume
1.2526367878509E+27
Surface area
5.619541712052E+18
Circumference
4201703340.2091
Perimeter
2674887424
Area
447188920692084736
Diagonal
945715518.21051
Surface area
2683133524152508416
Volume
2.9904500502785E+26
Space diagonal
1158260230.7238
Perimeter
2006165568
Area
1.9363848280514E+17
Altitude
579130115.36188
Surface area
1.9363848280514E+17
Volume
3.5242791822526E+25
Height
315238506.07017