66181821 is an odd 8-digits composite number following 66181820
and preceding 66181822 . In scientific notation, it is written as 6.6181821 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 44121212 positive integers (up to 66181821) that are relatively prime to 66181821.
66181821 has 4 divisors, whose sum is 88242432
The reverse of 66181821 is 12818166
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
sixty-six million one hundred eighty-one thousand eight hundred twenty-one
Scientific notation
6.6181821 × 10^7
Engineering notation
6.6181821 × 10^6
Prime Factorization
3 × 22060607
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
66181821
Product of the distinct prime numbers
The prime factorization of 66181821 is 3 × 22060607.
Since it has a total of 2 prime factors.
3 , 2 , 47 , 57 , 330 , 168 , 7383 , 6492 , 44309 , 67274 , 80628 , 196146 , 2577735 , 7736317 , 78380737 , 23041718 , 463527037 , 126736688 , 9486628596 , 265223434
n×2
132363642
n×3
198545463
n×4
264727284
n×5
330909105
n÷2
33090910.5
n÷3
22060607
n÷3
16545455.25
n÷5
13236364.2
n2
4380033430876041
n3
2.8987858849625E+23
n4
1.9184692855592E+31
n5
1.2696779085088E+39
2 √n
8135.2210172804
3 √n
404.49476397681
4 √n
90.195460070229
5 √n
36.656225415954
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
-66181820
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 66181821 can be divided by 4 positive divisors.
The sum of these divisors (counting 66181821) is 1, the average is 0.25.
Base
System
Value
2
Binary
11111100011101101010111101
3
Ternary
11121112101101120
4
Quaternary
3330131222331
5
Quinary
113420304241
6
Senary
10322301153
8
Octal
374355275
10
Decimal
66181821
12
Duodecimal
1a1b77b9
16
Hexadecimal
3f1dabd
20
Vigesimal
10dceb1
36
Base36
13ei7x
md5
f1fbae918249c51769fb9fc4aadf55e9
sha1
74048d9fe06792638f5975f1780fe7013b7b28df
sha256
388719a73d855102b94a05eb7d62ba5c4490886fa5142b9f57c38552bf17d297
sha512
00ccd48f9949d47d3b80a96d6ace86e7e14a42c912837ce76f124d4eef4846ce8e3e2e4f2fda3d5ab5f0c60e8ca368b47aa9388923271bb428f59ae637d4dfb9
ripemd-160
12d73a511705e2adfa28b3047c1ff84991ae6042
Diameter
132363642
Circumference
415832645.30959
Area
1.3760280848918E+16
Volume
1.2142405920704E+24
Surface area
5.5041123395671E+16
Circumference
415832645.30959
Perimeter
264727284
Area
4380033430876041
Diagonal
93595228.840749
Surface area
26280200585256246
Volume
2.8987858849625E+23
Space diagonal
114630276.50943
Perimeter
198545463
Area
1.8966101102819E+15
Altitude
57315138.254714
Surface area
1.8966101102819E+15
Volume
3.4162519274414E+22
Height
31198409.613583