13611604 has 18 divisors (see below), whose sum is σ = 24620442. Its totient is φ = 6584400.

The previous prime is 13611599. The next prime is 13611613. The reversal of 13611604 is 40611631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11209104 + 2402500 = 3348^2 + 1550^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 2074 + ... + 5614.

Almost surely, 2^13611604 is an apocalyptic number.

It is an amenable number.

13611604 is a deficient number, since it is larger than the sum of its proper divisors (11008838).

13611604 is a wasteful number, since it uses less digits than its factorization.

13611604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13611604 is about 3689.3907356093. The cubic root of 13611604 is about 238.7645072186.

The spelling of 13611604 in words is "thirteen million, six hundred eleven thousand, six hundred four".