816561661 is an odd 9-digits prime number following 816561660
and preceding 816561662 . In scientific notation, it is written as 8.16561661 × 10^8.
The sum of its digits is 40. It has a total of 1 prime factors and 2 positive divisors.
There are 816561660 positive integers (up to 816561661) that are relatively prime to 816561661.
816561661 has 2 divisors, whose sum is 816561662
The reverse of 816561661 is 166165618
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 40 Digital Root 4
Name
eight hundred sixteen million five hundred sixty-one thousand six hundred sixty-one
Scientific notation
8.16561661 × 10^8
Engineering notation
8.16561661 × 10^6
Prime Factorization
816561661
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
816561661 Product of the distinct prime numbers
The prime factorization of 816561661 is 816561661.
Since it has a total of 1 prime factors.
8 , 4 , 81 , 64 , 972 , 533 , 4138 , 4924 , 96182 , 23678 , 507603 , 335640 , 502745 , 6209425 , 41735878 , 2043647 , 872695500 , 66227844 , 8262641794 , 7762544460
n×2
1633123322
n×3
2449684983
n×4
3266246644
n×5
4082808305
n÷2
408280830.5
n÷3
272187220.33333
n÷3
204140415.25
n÷5
163312332.2
n2
666772946215078921
n3
5.4446122447125E+26
n4
4.4458616180434E+35
n5
3.6303201474056E+44
2 √n28575.543056957
3 √n934.68009721953
4 √n169.04302131989
5 √n60.589559771821
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
816561662 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
408280831 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
28575.543074454 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999975507 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 816561661 can be divided by 2 positive divisors.
The sum of these divisors (counting 816561661) is 816561662, the average is 408280831.
Base
System
Value
2
Binary
110000101010111011110111111101
3
Ternary
2002220111122000111
4
Quaternary
300222323313331
5
Quinary
3133014433121
6
Senary
213005430021
8
Octal
6052736775
10
Decimal
816561661
12
Duodecimal
1a956b311
16
Hexadecimal
30abbdfd
20
Vigesimal
cf3a431
36
Base36
di5r0d
md5
1c5615e64ee7521edbbfc02912b6d56f
sha1
547bf3780bf37e5270a10ffec0568d00e85c6fdd
sha256
eea429a4f24ff27baf96f3e18bc0fbb6c28a9617b3a687ad2b3343c77a6c7378
sha512
d5e78a3fe16ff8ebc1ce9030072def37e46198440941ecd81b4f1194b1bc90ac2d714f8f396ee4352ed4a3c2d5e096e309fc11e2d5817f0daefcc569c294aeb9
ripemd-160
94eab419302b70d3b0d509b85cd6a940375eff15
Diameter
1633123322
Circumference
5130608230.8014
Area
2.0947289894417E+18
Volume
2.2806338439512E+27
Surface area
8.3789159577669E+18
Circumference
5130608230.8014
Perimeter
3266246644
Area
666772946215078921
Diagonal
1154792575.5001
Surface area
4000637677290473526
Volume
5.4446122447125E+26
Space diagonal
1414326284.3648
Perimeter
2449684983
Area
2.8872115498923E+17
Altitude
707163142.18242
Surface area
2.8872115498923E+17
Volume
6.4165370652792E+25
Height
384930858.50003