661291216 is an even 9-digits composite number following 661291215
and preceding 661291217 . In scientific notation, it is written as 6.61291216 × 10^8.
The sum of its digits is 34. It has a total of 6 prime factors and 20 positive divisors.
There are 316269536 positive integers (up to 661291216) that are relatively prime to 661291216.
661291216 has 20 divisors, whose sum is 1336959072
The reverse of 661291216 is 612192166
Previous prime number is 23
Is Prime? no
Number parity even
Number length 9
Sum of Digits 34
Digital Root 7
Name
six hundred sixty-one million two hundred ninety-one thousand two hundred sixteen
Scientific notation
6.61291216 × 10^8
Engineering notation
6.61291216 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 23 × 1796987
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
82661402
Product of the distinct prime numbers
The prime factorization of 661291216 is 2 × 2 × 2 × 2 × 23 × 1796987.
Since it has a total of 6 prime factors.
5 , 10 , 46 , 97 , 50 , 550 , 4110 , 3188 , 70519 , 52051 , 801767 , 575104 , 8404521 , 775526 , 10718569 , 59545812 , 783665365 , 255668981 , 7552628771 , 7859100276
n×2
1322582432
n×3
1983873648
n×4
2645164864
n×5
3306456080
n÷2
330645608
n÷3
220430405.33333
n÷3
165322804
n÷5
132258243.2
n2
437306072358758656
n3
2.8918666435431E+26
n4
1.9123660092184E+35
n5
1.2646308436731E+44
2 √n
25715.583135523
3 √n
871.22618133943
4 √n
160.36079051789
5 √n
58.086946981444
1 , 2 , 4 , 8 , 16 , 23 , 46 , 92 , 184 , 368 , 1796987 , 3593974 , 7187948 , 14375896 , 28751792 , 41330701 , 82661402 , 165322804 , 330645608 , 661291216
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-661291215
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 661291216 can be divided by 20 positive divisors.
The sum of these divisors (counting 661291216) is 1, the average is 0.05.
Base
System
Value
2
Binary
100111011010101000000011010000
3
Ternary
1201002100002000021
4
Quaternary
213122220003100
5
Quinary
2323242304331
6
Senary
145341433224
8
Octal
4732500320
10
Decimal
661291216
12
Duodecimal
16556b814
16
Hexadecimal
276a80d0
20
Vigesimal
a6d180g
36
Base36
axprkg
md5
c7cd0f7e6f37d7231c1b225f0e66b40f
sha1
8c385bf0d174aa77dcd0ca22722ecfec8984e82b
sha256
c5cc67e9a68075083d0ae2b987f38c25343f45a5e85cbcbd05cee6464099a9b0
sha512
6ec1e89561b2f361068869bfe916a136d22a83d5d1a2a6b4bdf4796f7e1ce488080b466a1ab41e84605089d7ded07bfb4e795e669624a2e837291fe333c78722
ripemd-160
aea7858bc92c490ac05bec861a5dc3a8386e15f5
Diameter
1322582432
Circumference
4155015252.1381
Area
1.3738375442925E+18
Volume
1.2113422670022E+27
Surface area
5.4953501771699E+18
Circumference
4155015252.1381
Perimeter
2645164864
Area
437306072358758656
Diagonal
935207006.3454
Surface area
2623836434152551936
Volume
2.8918666435431E+26
Space diagonal
1145389984.711
Perimeter
1983873648
Area
1.8935908394594E+17
Altitude
572694992.3555
Surface area
1.8935908394594E+17
Volume
3.4080975232275E+25
Height
311735668.7818