63989696 has 28 divisors (see below), whose sum is σ = 127464312. Its totient is φ = 31872768.

The previous prime is 63989693. The next prime is 63989743. The reversal of 63989696 is 69698936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63989693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16346 + ... + 19878.

Almost surely, 2^63989696 is an apocalyptic number.

It is an amenable number.

63989696 is a deficient number, since it is larger than the sum of its proper divisors (63474616).

63989696 is a wasteful number, since it uses less digits than its factorization.

63989696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828 (or 3818 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 56.

The square root of 63989696 is about 7999.3559740769. The cubic root of 63989696 is about 399.9785321812.

The spelling of 63989696 in words is "sixty-three million, nine hundred eighty-nine thousand, six hundred ninety-six".