64642785 is an odd 8-digits composite number following 64642784
and preceding 64642786 . In scientific notation, it is written as 6.4642785 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 34476144 positive integers (up to 64642785) that are relatively prime to 64642785.
64642785 has 8 divisors, whose sum is 103428480
The reverse of 64642785 is 58724646
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
sixty-four million six hundred forty-two thousand seven hundred eighty-five
Scientific notation
6.4642785 × 10^7
Engineering notation
6.4642785 × 10^6
Prime Factorization
3 × 5 × 4309519
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
64642785
Product of the distinct prime numbers
The prime factorization of 64642785 is 3 × 5 × 4309519.
Since it has a total of 3 prime factors.
4 , 10 , 100 , 57 , 212 , 574 , 3793 , 2004 , 2707 , 98738 , 130080 , 373310 , 3088531 , 619736 , 72050902 , 56331040 , 275234163 , 289799761 , 895044644 , 9285707140
n×2
129285570
n×3
193928355
n×4
258571140
n×5
323213925
n÷2
32321392.5
n÷3
21547595
n÷3
16160696.25
n÷5
12928557
n2
4178689652556225
n3
2.7012213679192E+23
n4
1.746144721238E+31
n5
1.1287565779388E+39
2 √n
8040.0736936921
3 √n
401.33467705634
4 √n
89.666458019106
5 √n
36.484131447978
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
-64642784
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 64642785 can be divided by 8 positive divisors.
The sum of these divisors (counting 64642785) is 1, the average is 0.125.
Base
System
Value
2
Binary
11110110100101111011100001
3
Ternary
11111122012020020
4
Quaternary
3312211323201
5
Quinary
113022032120
6
Senary
10225304053
8
Octal
366457341
10
Decimal
64642785
12
Duodecimal
19795029
16
Hexadecimal
3da5ee1
20
Vigesimal
10406j5
36
Base36
12hiox
md5
5cf41f0b603eac0cb10723248d94ad90
sha1
48ecdbf531a1caf77261d8b0cc33e7214c3cdfb7
sha256
f1c5a7622a8d3f38c6eabd53ba007d8d0a23513464cd4f8e4a6bc2d14d35297e
sha512
50596d38b62485865014025edd97cc59e3236360a00a67327fe3d81d16dcac5a1a7d8e6553d3a771edec63171aa3766b8a26f3495b95b3556572af5379ed88bd
ripemd-160
384dc422267c95fd655f71e192ab18567db66e3a
Diameter
129285570
Circumference
406162596.92717
Area
1.3127740714102E+16
Volume
1.13148496069E+24
Surface area
5.2510962856409E+16
Circumference
406162596.92717
Perimeter
258571140
Area
4178689652556225
Diagonal
91418703.256568
Surface area
25072137915337350
Volume
2.7012213679192E+23
Space diagonal
111964587.96275
Perimeter
193928355
Area
1.8094256968224E+15
Altitude
55982293.981376
Surface area
1.8094256968224E+15
Volume
3.1834199112361E+22
Height
30472901.085523