63983964 has 24 divisors (see below), whose sum is σ = 162868608. Its totient is φ = 19389040.

The previous prime is 63983951. The next prime is 63984007. The reversal of 63983964 is 46938936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242232 + ... + 242495.

It is an arithmetic number, because the mean of its divisors is an integer number (6786192).

Almost surely, 2^63983964 is an apocalyptic number.

It is an amenable number.

63983964 is an abundant number, since it is smaller than the sum of its proper divisors (98884644).

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

63983964 is a wasteful number, since it uses less digits than its factorization.

63983964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484745 (or 484743 counting only the distinct ones).

The product of its digits is 839808, while the sum is 48.

The square root of 63983964 is about 7998.9976872106. The cubic root of 63983964 is about 399.9665888760.

The spelling of 63983964 in words is "sixty-three million, nine hundred eighty-three thousand, nine hundred sixty-four".