640901 is an odd 6-digits prime number following 640900
and preceding 640902 . In scientific notation, it is written as 6.40901 × 10^5.
The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors.
There are 640900 positive integers (up to 640901) that are relatively prime to 640901.
640901 has 2 divisors, whose sum is 640902
The reverse of 640901 is 109046
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 6
Sum of Digits 20
Digital Root 2
Name
six hundred forty thousand nine hundred one
Scientific notation
6.40901 × 10^5
Engineering notation
6.40901 × 10^3
Prime Factorization
640901
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
640901
Product of the distinct prime numbers
The prime factorization of 640901 is 640901.
Since it has a total of 1 prime factors.
1 , 2 , 40 , 11 , 599 , 789 , 8769 , 6846 , 21243 , 23340 , 342541 , 919395 , 2736795 , 8428293 , 83202717 , 36936273 , 817417703 , 523578045 , 7066608593 , 4510510867
n×2
1281802
n×3
1922703
n×4
2563604
n×5
3204505
n÷2
320450.5
n÷3
213633.66666667
n÷3
160225.25
n÷5
128180.2
n2
410754091801
n3
263252708189352701
n4
1.6871892393126E+23
n5
1.0813212706647E+29
2 √n
800.56292694578
3 √n
86.217809173035
4 √n
28.294220734026
5 √n
14.499672392627
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
640902
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
320451
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
800.56355150606
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999968793981
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 640901 can be divided by 2 positive divisors.
The sum of these divisors (counting 640901) is 640902, the average is 320451.
Base
System
Value
2
Binary
10011100011110000101
3
Ternary
1012120011002
4
Quaternary
2130132011
5
Quinary
131002101
6
Senary
21423045
8
Octal
2343605
10
Decimal
640901
12
Duodecimal
26aa85
16
Hexadecimal
9c785
20
Vigesimal
40251
36
Base36
dqit
md5
523eb04038874ccd6408b7d13b8161f9
sha1
2f4645201bfac26a4feb1063689cd313f958605a
sha256
52d789b3f406a042d329468c499acd6ee7abacd88ab0fa26e3787b0626322f64
sha512
a9f0bfca78934bc64de305b9852c21d94775ef861e4bf04f9a28aee655f18b40ebf81c8b77e8f4f16235d428d68df51e3d586d361824987c24e9dd5f29e5e3af
ripemd-160
7541f787f1d1dd839e34d4e519a711c2dbd492c6
Diameter
1281802
Circumference
4026899.7465567
Area
1290422037234
Volume
1.1027103654471E+18
Surface area
5161688148935.9
Circumference
4026899.7465567
Perimeter
2563604
Area
410754091801
Diagonal
906370.88633848
Surface area
2464524550806
Volume
263252708189352701
Space diagonal
1110073.0946217
Perimeter
1922703
Area
177861739104.04
Altitude
555036.54731085
Surface area
177861739104.04
Volume
3.1024629187736E+16
Height
302123.62877949