68640906 is an even 8-digits composite number following 68640905
and preceding 68640907 . In scientific notation, it is written as 6.8640906 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 22880300 positive integers (up to 68640906) that are relatively prime to 68640906.
68640906 has 8 divisors, whose sum is 137281824
The reverse of 68640906 is 60904686
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 39
Digital Root 3
Name
sixty-eight million six hundred forty thousand nine hundred six
Scientific notation
6.8640906 × 10^7
Engineering notation
6.8640906 × 10^6
Prime Factorization
2 × 3 × 11440151
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
68640906
Product of the distinct prime numbers
The prime factorization of 68640906 is 2 × 3 × 11440151.
Since it has a total of 3 prime factors.
8 , 10 , 65 , 54 , 383 , 975 , 2742 , 4026 , 59132 , 49993 , 364785 , 419077 , 362341 , 377745 , 47838933 , 18170225 , 658396630 , 257818591 , 5697000585 , 8302726168
n×2
137281812
n×3
205922718
n×4
274563624
n×5
343204530
n÷2
34320453
n÷3
22880302
n÷3
17160226.5
n÷5
13728181.2
n2
4711573976500836
n3
3.2340670643304E+23
n4
2.219892933604E+31
n5
1.5237546218558E+39
2 √n
8284.980748318
3 √n
409.44383444036
4 √n
91.021869615593
5 √n
36.924668195437
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-68640905
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 68640906 can be divided by 8 positive divisors.
The sum of these divisors (counting 68640906) is 1, the average is 0.125.
Base
System
Value
2
Binary
100000101110110000010001010
3
Ternary
11210011022121210
4
Quaternary
10011312002022
5
Quinary
120033002111
6
Senary
10451113550
8
Octal
405660212
10
Decimal
68640906
12
Duodecimal
1aba28b6
16
Hexadecimal
417608a
20
Vigesimal
1190256
36
Base36
14v7nu
md5
c9674002ec93d00d318a91a542b451c3
sha1
46f4d9f0b4fd48c4dda9e6807f9819d949d6ebe4
sha256
224d694646ee09596c00bb0dea62a613c4b2cea7ef15ca2a8b2047908463760c
sha512
bc5609a085569b335943c0c5143af488ecebeea9b1020750caaec33bf09b9bd4e07631e8331e3d4e5b0b2412c3f5a3eaf1af7c67a661189bc0cb39122f468883
ripemd-160
3887add3d021883e05ffadeb8f6a014fcb31c3ca
Diameter
137281812
Circumference
431283532.0507
Area
1.480184619142E+16
Volume
1.3546828440689E+24
Surface area
5.9207384765679E+16
Circumference
431283532.0507
Perimeter
274563624
Area
4711573976500836
Diagonal
97072900.198777
Surface area
28269443859005016
Volume
3.2340670643304E+23
Space diagonal
118889536.66956
Perimeter
205922718
Area
2.0401713777297E+15
Altitude
59444768.33478
Surface area
2.0401713777297E+15
Volume
3.8113845866668E+22
Height
32357633.399592