64865312 has 24 divisors (see below), whose sum is σ = 128452716. Its totient is φ = 32242432.

The previous prime is 64865309. The next prime is 64865347. The reversal of 64865312 is 21356846.

It can be written as a sum of positive squares in 2 ways, for example, as 63936016 + 929296 = 7996^2 + 964^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323 + ... + 11394.

Almost surely, 2^64865312 is an apocalyptic number.

It is an amenable number.

64865312 is a deficient number, since it is larger than the sum of its proper divisors (63587404).

64865312 is a wasteful number, since it uses less digits than its factorization.

64865312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11900 (or 11892 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 64865312 is about 8053.9004215349. The cubic root of 64865312 is about 401.7946691971.

The spelling of 64865312 in words is "sixty-four million, eight hundred sixty-five thousand, three hundred twelve".