3638564 has 12 divisors (see below), whose sum is σ = 6390384. Its totient is φ = 1812744.

The previous prime is 3638549. The next prime is 3638573. The reversal of 3638564 is 4658363.

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, 254 + ... + 2709.

It is an arithmetic number, because the mean of its divisors is an integer number (532532).

Almost surely, 2^3638564 is an apocalyptic number.

It is an amenable number.

3638564 is a deficient number, since it is larger than the sum of its proper divisors (2751820).

3638564 is a wasteful number, since it uses less digits than its factorization.

3638564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274 (or 3272 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 3638564 is about 1907.5020314537. The cubic root of 3638564 is about 153.8072023697.

The spelling of 3638564 in words is "three million, six hundred thirty-eight thousand, five hundred sixty-four".