12604531 has 16 divisors (see below), whose sum is σ = 14199840. Its totient is φ = 11128320.

The previous prime is 12604523. The next prime is 12604549. The reversal of 12604531 is 13540621.

12604531 = 119² + 120² + ... + 340².

It is a cyclic number.

It is not a de Polignac number, because 12604531 - 2³ = 12604523 is a prime.

It is a super-2 number, since 2×12604531² = 317748403459922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12604511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17896 + ... + 18586.

It is an arithmetic number, because the mean of its divisors is an integer number (887490).

Almost surely, 2^12604531 is an apocalyptic number.

12604531 is a deficient number, since it is larger than the sum of its proper divisors (1595309).

12604531 is a wasteful number, since it uses less digits than its factorization.

12604531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12604531 is about 3550.2860448139. The cubic root of 12604531 is about 232.7245666235.

The spelling of 12604531 in words is "twelve million, six hundred four thousand, five hundred thirty-one".