3686636 has 12 divisors (see below), whose sum is σ = 6482112. Its totient is φ = 1834608.

The previous prime is 3686629. The next prime is 3686651. The reversal of 3686636 is 6366863.

It is a happy number.

3686636 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3686636.

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, 1175 + ... + 2958.

It is an arithmetic number, because the mean of its divisors is an integer number (540176).

Almost surely, 2^3686636 is an apocalyptic number.

It is an amenable number.

3686636 is a deficient number, since it is larger than the sum of its proper divisors (2795476).

3686636 is a wasteful number, since it uses less digits than its factorization.

3686636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360 (or 4358 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 3686636 is about 1920.0614573497. The cubic root of 3686636 is about 154.4815979870.

The spelling of 3686636 in words is "three million, six hundred eighty-six thousand, six hundred thirty-six".