64920964 has 12 divisors (see below), whose sum is σ = 114184000. Its totient is φ = 32296968.

The previous prime is 64920953. The next prime is 64920971. The reversal of 64920964 is 46902946.

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, 39984 + ... + 41575.

Almost surely, 2^64920964 is an apocalyptic number.

It is an amenable number.

64920964 is a deficient number, since it is larger than the sum of its proper divisors (49263036).

64920964 is a wasteful number, since it uses less digits than its factorization.

64920964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81762 (or 81760 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 64920964 is about 8057.3546527381. The cubic root of 64920964 is about 401.9095445926.

The spelling of 64920964 in words is "sixty-four million, nine hundred twenty thousand, nine hundred sixty-four".