63888464 has 10 divisors (see below), whose sum is σ = 123783930. Its totient is φ = 31944224.

The previous prime is 63888449. The next prime is 63888491. The reversal of 63888464 is 46488836.

It can be written as a sum of positive squares in only one way, i.e., 57638464 + 6250000 = 7592^2 + 2500^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996499 + ... + 1996530.

It is an arithmetic number, because the mean of its divisors is an integer number (12378393).

Almost surely, 2^63888464 is an apocalyptic number.

It is an amenable number.

63888464 is a deficient number, since it is larger than the sum of its proper divisors (59895466).

63888464 is a wasteful number, since it uses less digits than its factorization.

63888464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993037 (or 3993031 counting only the distinct ones).

The product of its digits is 884736, while the sum is 47.

The square root of 63888464 is about 7993.0259601730. The cubic root of 63888464 is about 399.7674982168.

The spelling of 63888464 in words is "sixty-three million, eight hundred eighty-eight thousand, four hundred sixty-four".