63399664 has 30 divisors (see below), whose sum is σ = 130497104. Its totient is φ = 29832960.

The previous prime is 63399659. The next prime is 63399691. The reversal of 63399664 is 46699336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2232 + ... + 11479.

Almost surely, 2^63399664 is an apocalyptic number.

It is an amenable number.

63399664 is an abundant number, since it is smaller than the sum of its proper divisors (67097440).

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

63399664 is a wasteful number, since it uses less digits than its factorization.

63399664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13753 (or 13730 counting only the distinct ones).

The product of its digits is 629856, while the sum is 46.

The square root of 63399664 is about 7962.3905957947. The cubic root of 63399664 is about 398.7453688662.

The spelling of 63399664 in words is "sixty-three million, three hundred ninety-nine thousand, six hundred sixty-four".