64904131 has 2 divisors, whose sum is σ = 64904132. Its totient is φ = 64904130.

The previous prime is 64904101. The next prime is 64904207. The reversal of 64904131 is 13140946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64904131 - 2¹¹ = 64902083 is a prime.

It is a super-2 number, since 2×64904131² = 8425092441730322, 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 64904131.

It is not a weakly prime, because it can be changed into another prime (64904101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32452065 + 32452066.

It is an arithmetic number, because the mean of its divisors is an integer number (32452066).

Almost surely, 2^64904131 is an apocalyptic number.

64904131 is a deficient number, since it is larger than the sum of its proper divisors (1).

64904131 is an equidigital number, since it uses as much as digits as its factorization.

64904131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 64904131 is about 8056.3100114134. The cubic root of 64904131 is about 401.8748052842.

The spelling of 64904131 in words is "sixty-four million, nine hundred four thousand, one hundred thirty-one".