12604289 has 4 divisors (see below), whose sum is σ = 12897456. Its totient is φ = 12311124.

The previous prime is 12604243. The next prime is 12604303. The reversal of 12604289 is 98240621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98240621 = 19 ⋅5170559.

It is a cyclic number.

It is not a de Polignac number, because 12604289 - 2¹⁶ = 12538753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12604219) 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, 146519 + ... + 146604.

It is an arithmetic number, because the mean of its divisors is an integer number (3224364).

Almost surely, 2^12604289 is an apocalyptic number.

It is an amenable number.

12604289 is a deficient number, since it is larger than the sum of its proper divisors (293167).

12604289 is an equidigital number, since it uses as much as digits as its factorization.

12604289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293166.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12604289 is about 3550.2519628894. The cubic root of 12604289 is about 232.7230772198.

The spelling of 12604289 in words is "twelve million, six hundred four thousand, two hundred eighty-nine".