64977312 has 48 divisors (see below), whose sum is σ = 174206592. Its totient is φ = 21196800.

The previous prime is 64977301. The next prime is 64977329. The reversal of 64977312 is 21377946.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2689 + ... + 11712.

It is an arithmetic number, because the mean of its divisors is an integer number (3629304).

Almost surely, 2^64977312 is an apocalyptic number.

It is an amenable number.

64977312 is an abundant number, since it is smaller than the sum of its proper divisors (109229280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64977312 is a wasteful number, since it uses less digits than its factorization.

64977312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14461 (or 14453 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 64977312 is about 8060.8505754666. The cubic root of 64977312 is about 402.0257897863.

The spelling of 64977312 in words is "sixty-four million, nine hundred seventy-seven thousand, three hundred twelve".