668749861 is an odd 9-digits composite number following 668749860
and preceding 668749862 . In scientific notation, it is written as 6.68749861 × 10^8.
The sum of its digits is 55. It has a total of 4 prime factors and 16 positive divisors.
There are 607181184 positive integers (up to 668749861) that are relatively prime to 668749861.
668749861 has 16 divisors, whose sum is 732062464
The reverse of 668749861 is 168947866
Previous prime number is 487
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 55
Digital Root 1
Name
six hundred sixty-eight million seven hundred forty-nine thousand eight hundred sixty-one
Scientific notation
6.68749861 × 10^8
Engineering notation
6.68749861 × 10^6
Prime Factorization
13 × 73 × 487 × 1447
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
668749861
Product of the distinct prime numbers
The prime factorization of 668749861 is 13 × 73 × 487 × 1447.
Since it has a total of 4 prime factors.
5 , 6 , 95 , 15 , 556 , 291 , 6446 , 4134 , 40645 , 90241 , 616490 , 444581 , 8222930 , 7061335 , 95569298 , 3564470 , 954475383 , 472048191 , 6667904013 , 3894210550
n×2
1337499722
n×3
2006249583
n×4
2674999444
n×5
3343749305
n÷2
334374930.5
n÷3
222916620.33333
n÷3
167187465.25
n÷5
133749972.2
n2
447226376587519321
n3
2.9908257717844E+26
n4
2.000114319156E+35
n5
1.3375761729197E+44
2 √n
25860.198394444
3 √n
874.48943754614
4 √n
160.81106427869
5 √n
58.217391298688
1 , 13 , 73 , 487 , 949 , 1447 , 6331 , 18811 , 35551 , 105631 , 462163 , 704689 , 1373203 , 9160957 , 51442297 , 668749861
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-668749860
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 668749861 can be divided by 16 positive divisors.
The sum of these divisors (counting 668749861) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111110111000101000000100101
3
Ternary
1201121101000100101
4
Quaternary
213313011000211
5
Quinary
2332144443421
6
Senary
150205344101
8
Octal
4767050045
10
Decimal
668749861
12
Duodecimal
167b68031
16
Hexadecimal
27dc5025
20
Vigesimal
a8jded1
36
Base36
b25mp1
md5
dde375beab6c447ce39f77c452a2ba59
sha1
325853349136d8721bbd12eb8682614734368c6a
sha256
84175069eeb1fa900d95d4dc2b20269890d281f41de413d9fe7f73e1593797aa
sha512
8f716bca6e2fa26de627e6a5505f1d9f0d34034e2caf3be42660c278dd2be830449c816a8ef23c6117a84d1976181a09b4cbed8dfa75666fcbe4c26f4da3718a
ripemd-160
a77d94407a34ec57d4ce3ae0431cc3b85900b4eb
Diameter
1337499722
Circumference
4201879300.8136
Area
1.4050030991789E+18
Volume
1.2527941697073E+27
Surface area
5.6200123967157E+18
Circumference
4201879300.8136
Perimeter
2674999444
Area
447226376587519321
Diagonal
945755123.26132
Surface area
2683358259525115926
Volume
2.9908257717844E+26
Space diagonal
1158308736.8066
Perimeter
2006249583
Area
1.9365470168363E+17
Altitude
579154368.40331
Surface area
1.9365470168363E+17
Volume
3.5247219742937E+25
Height
315251707.75377