3655864 has 16 divisors (see below), whose sum is σ = 6903000. Its totient is φ = 1815072.

The previous prime is 3655849. The next prime is 3655877. The reversal of 3655864 is 4685563.

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, 342 + ... + 2725.

Almost surely, 2^3655864 is an apocalyptic number.

It is an amenable number.

3655864 is a deficient number, since it is larger than the sum of its proper divisors (3247136).

3655864 is a wasteful number, since it uses less digits than its factorization.

3655864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222 (or 3218 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 3655864 is about 1912.0313804956. The cubic root of 3655864 is about 154.0505821361.

The spelling of 3655864 in words is "three million, six hundred fifty-five thousand, eight hundred sixty-four".