Search a number
-
+
6380081 is a prime number
BaseRepresentation
bin11000010101101000110001
3110000010211022
4120111220301
53113130311
6344425225
7105141551
oct30255061
913003738
106380081
1136684a4
122178215
131424cc6
14bc1161
158605db
hex615a31

6380081 has 2 divisors, whose sum is σ = 6380082. Its totient is φ = 6380080.

The previous prime is 6380071. The next prime is 6380107. The reversal of 6380081 is 1800836.

It is an a-pointer prime, because the next prime (6380107) can be obtained adding 6380081 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4840000 + 1540081 = 2200^2 + 1241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-6380081 is a prime.

It is a super-2 number, since 2×63800812 = 81410867133122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6380081.

It is not a weakly prime, because it can be changed into another prime (6380071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190040 + 3190041.

It is an arithmetic number, because the mean of its divisors is an integer number (3190041).

Almost surely, 26380081 is an apocalyptic number.

It is an amenable number.

6380081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6380081 is an equidigital number, since it uses as much as digits as its factorization.

6380081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 6380081 is about 2525.8822221157. The cubic root of 6380081 is about 185.4707369023.

The spelling of 6380081 in words is "six million, three hundred eighty thousand, eighty-one".