66561665 is an odd 8-digits composite number following 66561664
and preceding 66561666 . In scientific notation, it is written as 6.6561665 × 10^7.
The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors.
There are 53051760 positive integers (up to 66561665) that are relatively prime to 66561665.
66561665 has 8 divisors, whose sum is 80170368
The reverse of 66561665 is 56616566
Previous prime number is 271
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
sixty-six million five hundred sixty-one thousand six hundred sixty-five
Scientific notation
6.6561665 × 10^7
Engineering notation
6.6561665 × 10^6
Prime Factorization
5 × 271 × 49123
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
66561665
Product of the distinct prime numbers
The prime factorization of 66561665 is 5 × 271 × 49123.
Since it has a total of 3 prime factors.
10 , 6 , 70 , 13 , 241 , 707 , 6658 , 789 , 13501 , 59610 , 923749 , 179311 , 4108071 , 8533519 , 81548631 , 42019838 , 771558988 , 857642710 , 8311361048 , 8302205006
n×2
133123330
n×3
199684995
n×4
266246660
n×5
332808325
n÷2
33280832.5
n÷3
22187221.666667
n÷3
16640416.25
n÷5
13312333
n2
4430455247572225
n3
2.9489847798639E+23
n4
1.962893370074E+31
n5
1.3065345092959E+39
2 √n
8158.5332627869
3 √n
405.26714072747
4 √n
90.324599433304
5 √n
36.698206102966
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-66561664
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 66561665 can be divided by 8 positive divisors.
The sum of these divisors (counting 66561665) is 1, the average is 0.125.
Base
System
Value
2
Binary
11111101111010011010000001
3
Ternary
11122020200102212
4
Quaternary
3331322122001
5
Quinary
114014433130
6
Senary
10334351505
8
Octal
375723201
10
Decimal
66561665
12
Duodecimal
1a35b595
16
Hexadecimal
3f7a681
20
Vigesimal
10g0435
36
Base36
13mnb5
md5
581b879037bb55f68d26963526bd019f
sha1
22afecd79292d2ccc4a06c10edc04bf2a5c8066a
sha256
f622d5e16ac93cbb3f1b1b5bf1b2c0fba68b5ae828fe8bde84ab938f1a61d916
sha512
eaf844fa54fa63e09bd22f5de2d410bd2f891514c33d7de169c6841c9f2cfe45e7d6e62cf74cd030daf0e9566ff49013765501f8fc3bb909e8a148589372daf9
ripemd-160
c0a687e2afa3341bdbb5c186ba2caea6f262e2ed
Diameter
133123330
Circumference
418219275.54941
Area
1.3918685657831E+16
Volume
1.2352678559958E+24
Surface area
5.5674742631325E+16
Circumference
418219275.54941
Perimeter
266246660
Area
4430455247572225
Diagonal
94132409.377135
Surface area
26582731485433350
Volume
2.9489847798639E+23
Space diagonal
115288185.61638
Perimeter
199684995
Area
1.9184433973638E+15
Altitude
57644092.80819
Surface area
1.9184433973638E+15
Volume
3.4754118924295E+22
Height
31377469.792378