13553604 has 36 divisors (see below), whose sum is σ = 34384896. Its totient is φ = 4501488.

The previous prime is 13553591. The next prime is 13553621. The reversal of 13553604 is 40635531.

13553604 is a `hidden beast` number, since 1 + 3 + 5 + 53 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13297 + ... + 14279.

It is an arithmetic number, because the mean of its divisors is an integer number (955136).

Almost surely, 2^13553604 is an apocalyptic number.

It is an amenable number.

13553604 is an abundant number, since it is smaller than the sum of its proper divisors (20831292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13553604 is a wasteful number, since it uses less digits than its factorization.

13553604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 13553604 is about 3681.5219678823. The cubic root of 13553604 is about 238.4248936139.

The spelling of 13553604 in words is "thirteen million, five hundred fifty-three thousand, six hundred four".