639968 is an even 6-digits composite number following 639967
and preceding 639969 . In scientific notation, it is written as 6.39968 × 10^5.
The sum of its digits is 41. It has a total of 7 prime factors and 24 positive divisors.
There are 274176 positive integers (up to 639968) that are relatively prime to 639968.
639968 has 24 divisors, whose sum is 1440432
The reverse of 639968 is 869936
Previous prime number is 7
Is Prime? no
Number parity even
Number length 6
Sum of Digits 41
Digital Root 5
Name
six hundred thirty-nine thousand nine hundred sixty-eight
Scientific notation
6.39968 × 10^5
Engineering notation
6.39968 × 10^3
Prime Factorization
2 × 2 × 2 × 2 × 2 × 7 × 2857
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
7
Total number of prime factors
rad
Radical
39998
Product of the distinct prime numbers
The prime factorization of 639968 is 2 × 2 × 2 × 2 × 2 × 7 × 2857.
Since it has a total of 7 prime factors.
9 , 10 , 20 , 57 , 340 , 110 , 2444 , 6094 , 7201 , 76521 , 914630 , 39490 , 8361524 , 2437358 , 59166032 , 95897778 , 997716798 , 874602631 , 2669961750 , 7855780674
n×2
1279936
n×3
1919904
n×4
2559872
n×5
3199840
n÷2
319984
n÷3
213322.66666667
n÷3
159992
n÷5
127993.6
n2
409559041024
n3
262104680366047232
n4
1.677386080845E+23
n5
1.0734734153862E+29
2 √n
799.97999974999
3 √n
86.175951287543
4 √n
28.283917687442
5 √n
14.495448314722
1 , 2 , 4 , 7 , 8 , 14 , 16 , 28 , 32 , 56 , 112 , 224 , 2857 , 5714 , 11428 , 19999 , 22856 , 39998 , 45712 , 79996 , 91424 , 159992 , 319984 , 639968
24 divisors
τ
Total Divisors
24
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-639967
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.041666666666667
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
24
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 639968 can be divided by 24 positive divisors.
The sum of these divisors (counting 639968) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
10011100001111100000
3
Ternary
1012111212112
4
Quaternary
2130033200
5
Quinary
130434333
6
Senary
21414452
8
Octal
2341740
10
Decimal
639968
12
Duodecimal
26a428
16
Hexadecimal
9c3e0
20
Vigesimal
3jji8
36
Base36
dpsw
md5
3e5e89dd5ff9acab7f4d28328521da19
sha1
b1e82a55578d9725cb64c7ecd9a29e927935c11b
sha256
d21e8962d67f0fb8e5aedf5055b92a231641fa7cc5cc57fc2ec7ae145be86d45
sha512
26cb96a4396ffa79a99aaf74c8a078269aa96d6207b09a820402d5680517019d683c82bbf1bb84bdc1a11f04d1851852a0c435fb18141290f41763dc3fd311f5
ripemd-160
eec9957105452aa0bcd738e4a45e98317828329a
Diameter
1279936
Circumference
4021037.5346651
Area
1286667674492.3
Volume
1.097901517746E+18
Surface area
5146670697969.1
Circumference
4021037.5346651
Perimeter
2559872
Area
409559041024
Diagonal
905051.42508478
Surface area
2457354246144
Volume
262104680366047232
Space diagonal
1108457.0912182
Perimeter
1919904
Area
177344266938.19
Altitude
554228.54560912
Surface area
177344266938.19
Volume
3.0889332811261E+16
Height
301683.80836159