64633564 has 12 divisors (see below), whose sum is σ = 114166584. Its totient is φ = 32014544.

The previous prime is 64633559. The next prime is 64633571. The reversal of 64633564 is 46533646.

It is a congruent number.

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, 75079 + ... + 75934.

It is an arithmetic number, because the mean of its divisors is an integer number (9513882).

Almost surely, 2^64633564 is an apocalyptic number.

It is an amenable number.

64633564 is a deficient number, since it is larger than the sum of its proper divisors (49533020).

64633564 is a wasteful number, since it uses less digits than its factorization.

64633564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151124 (or 151122 counting only the distinct ones).

The product of its digits is 155520, while the sum is 37.

The square root of 64633564 is about 8039.5002332235. The cubic root of 64633564 is about 401.3155932920.

The spelling of 64633564 in words is "sixty-four million, six hundred thirty-three thousand, five hundred sixty-four".