64865313 has 32 divisors (see below), whose sum is σ = 101836800. Its totient is φ = 40719888.

The previous prime is 64865309. The next prime is 64865347. The reversal of 64865313 is 31356846.

64865313 is a `hidden beast` number, since 648 + 6 + 5 + 3 + 1 + 3 = 666.

64865313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64865313 - 2² = 64865309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64865303) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 40828 + ... + 42386.

It is an arithmetic number, because the mean of its divisors is an integer number (3182400).

Almost surely, 2^64865313 is an apocalyptic number.

It is an amenable number.

64865313 is a deficient number, since it is larger than the sum of its proper divisors (36971487).

64865313 is a wasteful number, since it uses less digits than its factorization.

64865313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658 (or 1652 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 64865313 is about 8053.9004836166. The cubic root of 64865313 is about 401.7946712619.

The spelling of 64865313 in words is "sixty-four million, eight hundred sixty-five thousand, three hundred thirteen".