12604809 has 24 divisors (see below), whose sum is σ = 20583840. Its totient is φ = 6822144.

The previous prime is 12604793. The next prime is 12604829. The reversal of 12604809 is 90840621.

It is not a de Polignac number, because 12604809 - 2⁴ = 12604793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12604829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (857660).

Almost surely, 2^12604809 is an apocalyptic number.

12604809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12604809 is a deficient number, since it is larger than the sum of its proper divisors (7979031).

12604809 is a wasteful number, since it uses less digits than its factorization.

12604809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4542 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12604809 is about 3550.3251963729. The cubic root of 12604809 is about 232.7262775679.

The spelling of 12604809 in words is "twelve million, six hundred four thousand, eight hundred nine".