64678312 has 16 divisors (see below), whose sum is σ = 121492800. Its totient is φ = 32280240.

The previous prime is 64678303. The next prime is 64678333. The reversal of 64678312 is 21387646.

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, 2512 + ... + 11647.

It is an arithmetic number, because the mean of its divisors is an integer number (7593300).

Almost surely, 2^64678312 is an apocalyptic number.

It is an amenable number.

64678312 is a deficient number, since it is larger than the sum of its proper divisors (56814488).

64678312 is a wasteful number, since it uses less digits than its factorization.

64678312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14736 (or 14732 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 64678312 is about 8042.2827605102. The cubic root of 64678312 is about 401.4081867079.

The spelling of 64678312 in words is "sixty-four million, six hundred seventy-eight thousand, three hundred twelve".