13604506 has 8 divisors (see below), whose sum is σ = 20443860. Its totient is φ = 6789888.

The previous prime is 13604501. The next prime is 13604519. The reversal of 13604506 is 60540631.

It can be written as a sum of positive squares in 2 ways, for example, as 13579225 + 25281 = 3685^2 + 159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13604501) 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, 4741 + ... + 7048.

Almost surely, 2^13604506 is an apocalyptic number.

13604506 is a deficient number, since it is larger than the sum of its proper divisors (6839354).

13604506 is a wasteful number, since it uses less digits than its factorization.

13604506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12368.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 13604506 is about 3688.4286627235. The cubic root of 13604506 is about 238.7229974121.

The spelling of 13604506 in words is "thirteen million, six hundred four thousand, five hundred six".