3656404 has 12 divisors (see below), whose sum is σ = 6459264. Its totient is φ = 1810904.

The previous prime is 3656383. The next prime is 3656413. The reversal of 3656404 is 4046563.

It is a super-2 number, since 2×3656404² = 26738580422432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844 + ... + 4699.

It is an arithmetic number, because the mean of its divisors is an integer number (538272).

Almost surely, 2^3656404 is an apocalyptic number.

It is an amenable number.

3656404 is a deficient number, since it is larger than the sum of its proper divisors (2802860).

3656404 is a wasteful number, since it uses less digits than its factorization.

3656404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8654 (or 8652 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 3656404 is about 1912.1725863530. The cubic root of 3656404 is about 154.0581665921.

The spelling of 3656404 in words is "three million, six hundred fifty-six thousand, four hundred four".