3656636 has 24 divisors (see below), whose sum is σ = 6792576. Its totient is φ = 1719360.

The previous prime is 3656633. The next prime is 3656641. The reversal of 3656636 is 6366563.

It is a junction number, because it is equal to n+sod(n) for n = 3656596 and 3656605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4190 + ... + 4986.

It is an arithmetic number, because the mean of its divisors is an integer number (283024).

Almost surely, 2^3656636 is an apocalyptic number.

It is an amenable number.

3656636 is a deficient number, since it is larger than the sum of its proper divisors (3135940).

3656636 is a wasteful number, since it uses less digits than its factorization.

3656636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its digits is 58320, while the sum is 35.

The square root of 3656636 is about 1912.2332493710. The cubic root of 3656636 is about 154.0614248698.

The spelling of 3656636 in words is "three million, six hundred fifty-six thousand, six hundred thirty-six".