3681604 has 12 divisors (see below), whose sum is σ = 6580224. Its totient is φ = 1801544.

The previous prime is 3681599. The next prime is 3681619. The reversal of 3681604 is 4061863.

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, 9604 + ... + 9979.

It is an arithmetic number, because the mean of its divisors is an integer number (548352).

Almost surely, 2^3681604 is an apocalyptic number.

It is an amenable number.

3681604 is a deficient number, since it is larger than the sum of its proper divisors (2898620).

3681604 is a wasteful number, since it uses less digits than its factorization.

3681604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19634 (or 19632 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3681604 is about 1918.7506351790. The cubic root of 3681604 is about 154.4112804630.

The spelling of 3681604 in words is "three million, six hundred eighty-one thousand, six hundred four".