64793864 has 16 divisors (see below), whose sum is σ = 121682220. Its totient is φ = 32345280.

The previous prime is 64793831. The next prime is 64793879. The reversal of 64793864 is 46839746.

64793864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 63329764 + 1464100 = 7958^2 + 1210^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839 + ... + 11414.

Almost surely, 2^64793864 is an apocalyptic number.

It is an amenable number.

64793864 is a deficient number, since it is larger than the sum of its proper divisors (56888356).

64793864 is a wasteful number, since it uses less digits than its factorization.

64793864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12920 (or 12916 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 64793864 is about 8049.4635846123. The cubic root of 64793864 is about 401.6470917461.

The spelling of 64793864 in words is "sixty-four million, seven hundred ninety-three thousand, eight hundred sixty-four".