13621604 has 12 divisors (see below), whose sum is σ = 23864064. Its totient is φ = 6803304.

The previous prime is 13621603. The next prime is 13621627. The reversal of 13621604 is 40612631.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13621604.

It is not an unprimeable number, because it can be changed into a prime (13621603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5069 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (1988672).

Almost surely, 2^13621604 is an apocalyptic number.

It is an amenable number.

13621604 is a deficient number, since it is larger than the sum of its proper divisors (10242460).

13621604 is a wasteful number, since it uses less digits than its factorization.

13621604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754 (or 3752 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13621604 is about 3690.7457241051. The cubic root of 13621604 is about 238.8229637287.

The spelling of 13621604 in words is "thirteen million, six hundred twenty-one thousand, six hundred four".