63995976 has 48 divisors (see below), whose sum is σ = 189081360. Its totient is φ = 19392480.

The previous prime is 63995969. The next prime is 63996001. The reversal of 63995976 is 67959936.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39610 + ... + 41193.

It is an arithmetic number, because the mean of its divisors is an integer number (3939195).

Almost surely, 2^63995976 is an apocalyptic number.

63995976 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

63995976 is an abundant number, since it is smaller than the sum of its proper divisors (125085384).

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

63995976 is a wasteful number, since it uses less digits than its factorization.

63995976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80826 (or 80819 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The square root of 63995976 is about 7999.7484960466. The cubic root of 63995976 is about 399.9916164910.

The spelling of 63995976 in words is "sixty-three million, nine hundred ninety-five thousand, nine hundred seventy-six".