639969 is an odd 6-digits composite number following 639968
and preceding 639970 . In scientific notation, it is written as 6.39969 × 10^5.
The sum of its digits is 42. It has a total of 5 prime factors and 24 positive divisors.
There are 369600 positive integers (up to 639969) that are relatively prime to 639969.
639969 has 24 divisors, whose sum is 983136
The reverse of 639969 is 969936
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 42
Digital Root 6
Name
six hundred thirty-nine thousand nine hundred sixty-nine
Scientific notation
6.39969 × 10^5
Engineering notation
6.39969 × 10^3
Prime Factorization
3 × 11 × 11 × 43 × 41
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
58179
Product of the distinct prime numbers
The prime factorization of 639969 is 3 × 11 × 11 × 43 × 41.
Since it has a total of 5 prime factors.
3 , 3 , 52 , 72 , 188 , 937 , 2725 , 4840 , 85561 , 58953 , 447438 , 947442 , 331741 , 1057862 , 75485220 , 77705999 , 860107734 , 688192664 , 3364480589 , 4555939222
n×2
1279938
n×3
1919907
n×4
2559876
n×5
3199845
n÷2
319984.5
n÷3
213323
n÷3
159992.25
n÷5
127993.8
n2
409560320961
n3
262105909045090209
n4
1.6773965650568E+23
n5
1.0734818023428E+29
2 √n
799.98062476538
3 √n
86.175996173072
4 √n
28.283928736393
5 √n
14.495452844773
1 , 3 , 11 , 33 , 41 , 43 , 121 , 123 , 129 , 363 , 451 , 473 , 1353 , 1419 , 1763 , 4961 , 5203 , 5289 , 14883 , 15609 , 19393 , 58179 , 213323 , 639969
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
-639968
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 639969 can be divided by 24 positive divisors.
The sum of these divisors (counting 639969) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
10011100001111100001
3
Ternary
1012111212120
4
Quaternary
2130033201
5
Quinary
130434334
6
Senary
21414453
8
Octal
2341741
10
Decimal
639969
12
Duodecimal
26a429
16
Hexadecimal
9c3e1
20
Vigesimal
3jji9
36
Base36
dpsx
md5
1bb8eaf62a2846a36bccfdfdf5abb9b6
sha1
f32bb6fb1c0f410f392a80ea18ae4c1be9539fbd
sha256
105a9035c0c9306ef95f7e7f3b778e76ae7260695637330c6eb754768fb5c52f
sha512
b07c9fc6fc354372d49652a36e79e80834763836423d2b872d3427dca57fb0e7b73485417a0560a2cc56a752b154fb79f3d36d48bd76237caf74ec9b56a292d2
ripemd-160
d8cb222b88b78e266136119fe2bfbdc65b038d23
Diameter
1279938
Circumference
4021043.8178504
Area
1286671695533
Volume
1.0979066644247E+18
Surface area
5146686782131.8
Circumference
4021043.8178504
Perimeter
2559876
Area
409560320961
Diagonal
905052.83929835
Surface area
2457361925766
Volume
262105909045090209
Space diagonal
1108458.823269
Perimeter
1919907
Area
177344821167.17
Altitude
554229.41163452
Surface area
177344821167.17
Volume
3.0889477612475E+16
Height
301684.27976612