8635664 has 10 divisors (see below), whose sum is σ = 16731630. Its totient is φ = 4317824.

The previous prime is 8635663. The next prime is 8635667. The reversal of 8635664 is 4665368.

It can be written as a sum of positive squares in only one way, i.e., 7840000 + 795664 = 2800^2 + 892^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8635663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269849 + ... + 269880.

It is an arithmetic number, because the mean of its divisors is an integer number (1673163).

Almost surely, 2^8635664 is an apocalyptic number.

It is an amenable number.

8635664 is a deficient number, since it is larger than the sum of its proper divisors (8095966).

8635664 is a wasteful number, since it uses less digits than its factorization.

8635664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539737 (or 539731 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 8635664 is about 2938.6500302009. The cubic root of 8635664 is about 205.1627816736.

The spelling of 8635664 in words is "eight million, six hundred thirty-five thousand, six hundred sixty-four".