63664564 has 12 divisors (see below), whose sum is σ = 112982688. Its totient is φ = 31383800.

The previous prime is 63664547. The next prime is 63664577. The reversal of 63664564 is 46546636.

It is a congruent number.

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, 111802 + ... + 112369.

It is an arithmetic number, because the mean of its divisors is an integer number (9415224).

Almost surely, 2^63664564 is an apocalyptic number.

It is an amenable number.

63664564 is a deficient number, since it is larger than the sum of its proper divisors (49318124).

63664564 is a wasteful number, since it uses less digits than its factorization.

63664564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224246 (or 224244 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 63664564 is about 7979.0077077291. The cubic root of 63664564 is about 399.2999505416.

The spelling of 63664564 in words is "sixty-three million, six hundred sixty-four thousand, five hundred sixty-four".