3656812 has 12 divisors (see below), whose sum is σ = 6446440. Its totient is φ = 1814976.

The previous prime is 3656801. The next prime is 3656827. The reversal of 3656812 is 2186563.

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, 2733 + ... + 3844.

Almost surely, 2^3656812 is an apocalyptic number.

It is an amenable number.

3656812 is a deficient number, since it is larger than the sum of its proper divisors (2789628).

3656812 is a wasteful number, since it uses less digits than its factorization.

3656812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720 (or 6718 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 3656812 is about 1912.2792683078. The cubic root of 3656812 is about 154.0638965747.

The spelling of 3656812 in words is "three million, six hundred fifty-six thousand, eight hundred twelve".