63940384 has 24 divisors (see below), whose sum is σ = 126112140. Its totient is φ = 31911936.

The previous prime is 63940379. The next prime is 63940397. The reversal of 63940384 is 48304936.

It can be written as a sum of positive squares in 2 ways, for example, as 52243984 + 11696400 = 7228^2 + 3420^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20052 + ... + 23020.

Almost surely, 2^63940384 is an apocalyptic number.

It is an amenable number.

63940384 is a deficient number, since it is larger than the sum of its proper divisors (62171756).

63940384 is a wasteful number, since it uses less digits than its factorization.

63940384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652 (or 3644 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 63940384 is about 7996.2731319034. The cubic root of 63940384 is about 399.8757614159.

The spelling of 63940384 in words is "sixty-three million, nine hundred forty thousand, three hundred eighty-four".