863535664 has 20 divisors (see below), whose sum is σ = 1698074104. Its totient is φ = 425323008.

The previous prime is 863535661. The next prime is 863535671. The reversal of 863535664 is 466535368.

It is not an unprimeable number, because it can be changed into a prime (863535661) 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, 401697 + ... + 403840.

Almost surely, 2^863535664 is an apocalyptic number.

It is an amenable number.

863535664 is a deficient number, since it is larger than the sum of its proper divisors (834538440).

863535664 is a wasteful number, since it uses less digits than its factorization.

863535664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805612 (or 805606 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 46.

The square root of 863535664 is about 29385.9773361377. The cubic root of 863535664 is about 952.2699785102.

The spelling of 863535664 in words is "eight hundred sixty-three million, five hundred thirty-five thousand, six hundred sixty-four".