66856989 is an odd 8-digits composite number following 66856988
and preceding 66856990 . In scientific notation, it is written as 6.6856989 × 10^7.
The sum of its digits is 57. It has a total of 3 prime factors and 8 positive divisors.
There are 44006976 positive integers (up to 66856989) that are relatively prime to 66856989.
66856989 has 8 divisors, whose sum is 90271360
The reverse of 66856989 is 98965866
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 57
Digital Root 3
Name
sixty-six million eight hundred fifty-six thousand nine hundred eighty-nine
Scientific notation
6.6856989 × 10^7
Engineering notation
6.6856989 × 10^6
Prime Factorization
3 × 79 × 282097
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
66856989
Product of the distinct prime numbers
The prime factorization of 66856989 is 3 × 79 × 282097.
Since it has a total of 3 prime factors.
6 , 2 , 43 , 56 , 164 , 788 , 6124 , 2542 , 98783 , 94869 , 67001 , 989000 , 4464191 , 4929065 , 39928262 , 24045267 , 65905341 , 558226970 , 9948033864 , 5237518568
n×2
133713978
n×3
200570967
n×4
267427956
n×5
334284945
n÷2
33428494.5
n÷3
22285663
n÷3
16714247.25
n÷5
13371397.8
n2
4469856978146121
n3
2.9884117881949E+23
n4
1.9979621405082E+31
n5
1.3357773285037E+39
2 √n
8176.6123180691
3 √n
405.86562605617
4 √n
90.424622299842
5 √n
36.730713335732
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
-66856988
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 66856989 can be divided by 8 positive divisors.
The sum of these divisors (counting 66856989) is 1, the average is 0.125.
Base
System
Value
2
Binary
11111111000010100000011101
3
Ternary
11122210200112210
4
Quaternary
3333002200131
5
Quinary
114103410424
6
Senary
10344551033
8
Octal
377024035
10
Decimal
66856989
12
Duodecimal
1a482479
16
Hexadecimal
3fc281d
20
Vigesimal
10hh299
36
Base36
13sz6l
md5
08d3f48ad7ca4e689259c3d7ba81b4d9
sha1
8c7bc8261ede5d2568c7b983e5aae23233432f32
sha256
9668d5127d28b8b2e366efa3b67cc54e56857529bebe435064b6bcb6571c3c76
sha512
38635b9790cb82c5d7c26480d3925eb4f14b988ec531b229376c011eabe663dadebcb08b0066bb929a56cebc7753b071f6622246858b67b35aa8a0796a2aba55
ripemd-160
db3cc2b5c84a52a08c5ee944055f3c7e66c637a5
Diameter
133713978
Circumference
420074850.96707
Area
1.4042469845141E+16
Volume
1.2517830026259E+24
Surface area
5.6169879380564E+16
Circumference
420074850.96707
Perimeter
267427956
Area
4469856978146121
Diagonal
94550060.583229
Surface area
26819141868876726
Volume
2.9884117881949E+23
Space diagonal
115799701.78907
Perimeter
200570967
Area
1.9355048471788E+15
Altitude
57899850.894537
Surface area
1.9355048471788E+15
Volume
3.5218770673507E+22
Height
31516686.861076