763643864 has 16 divisors (see below), whose sum is σ = 1432420200. Its totient is φ = 381665152.

The previous prime is 763643857. The next prime is 763643869. The reversal of 763643864 is 468346367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (763643869) 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, 2579 + ... + 39165.

Almost surely, 2^763643864 is an apocalyptic number.

It is an amenable number.

763643864 is a deficient number, since it is larger than the sum of its proper divisors (668776336).

763643864 is a wasteful number, since it uses less digits than its factorization.

763643864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39202 (or 39198 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 47.

The square root of 763643864 is about 27634.1068970937. The cubic root of 763643864 is about 914.0366757449.

The spelling of 763643864 in words is "seven hundred sixty-three million, six hundred forty-three thousand, eight hundred sixty-four".