661831 is an odd 6-digits composite number following 661830
and preceding 661832 . In scientific notation, it is written as 6.61831 × 10^5.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 654912 positive integers (up to 661831) that are relatively prime to 661831.
661831 has 4 divisors, whose sum is 668752
The reverse of 661831 is 138166
Previous prime number is 97
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 25
Digital Root 7
Name
six hundred sixty-one thousand eight hundred thirty-one
Scientific notation
6.61831 × 10^5
Engineering notation
6.61831 × 10^3
Prime Factorization
97 × 6823
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
661831
Product of the distinct prime numbers
The prime factorization of 661831 is 97 × 6823.
Since it has a total of 2 prime factors.
2 , 9 , 27 , 78 , 542 , 169 , 4791 , 1267 , 87059 , 25385 , 816830 , 698304 , 8300350 , 4690994 , 70670729 , 56842380 , 897974112 , 976112705 , 6264219594 , 2518794884
n×2
1323662
n×3
1985493
n×4
2647324
n×5
3309155
n÷2
330915.5
n÷3
220610.33333333
n÷3
165457.75
n÷5
132366.2
n2
438020272561
n3
289895395009319191
n4
1.9186175917441E+23
n5
1.2698005993616E+29
2 √n
813.52996257053
3 √n
87.146316521017
4 √n
28.522446644188
5 √n
14.593162587037
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-661830
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 661831 can be divided by 4 positive divisors.
The sum of these divisors (counting 661831) is 1, the average is 0.25.
Base
System
Value
2
Binary
10100001100101000111
3
Ternary
1020121212021
4
Quaternary
2201211013
5
Quinary
132134311
6
Senary
22104011
8
Octal
2414507
10
Decimal
661831
12
Duodecimal
27b007
16
Hexadecimal
a1947
20
Vigesimal
42ebb
36
Base36
e6o7
md5
6a3c1dc30aaa9f91c1431644cbf8bee1
sha1
01eb2524420975bbea0964ff475e55c527996b99
sha256
89eaaa7110ee05ffd053a82184ef83dd1ffe3fe62073a9cbd05311bb32293acd
sha512
d3affd3b36347c625da5c71f5330300727362533f96d6ca3be263514d8a09edc4004485bb39a29cb79a8814194c13e0fd1fa5fa6d4e5c57e5141e675162e9ca8
ripemd-160
a1ad140ac91ea824a7ba8fd0b248e033496739c6
Diameter
1323662
Circumference
4158406.815036
Area
1376081270401
Volume
1.2143109910277E+18
Surface area
5504325081604.1
Circumference
4158406.815036
Perimeter
2647324
Area
438020272561
Diagonal
935970.37619895
Surface area
2628121635366
Volume
289895395009319191
Space diagonal
1146324.9180241
Perimeter
1985493
Area
189668341705.2
Altitude
573162.45901206
Surface area
189668341705.2
Volume
3.4164499940974E+16
Height
311990.12539965