12604257 has 12 divisors (see below), whose sum is σ = 18301140. Its totient is φ = 8359008.

The previous prime is 12604243. The next prime is 12604303. The reversal of 12604257 is 75240621.

12604257 is a `hidden beast` number, since 1 + 2 + 604 + 2 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7834401 + 4769856 = 2799^2 + 2184^2 .

It is not a de Polignac number, because 12604257 - 2⁸ = 12604001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12604257.

It is not an unprimeable number, because it can be changed into a prime (12604217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1782 + ... + 5327.

It is an arithmetic number, because the mean of its divisors is an integer number (1525095).

Almost surely, 2^12604257 is an apocalyptic number.

It is an amenable number.

12604257 is a deficient number, since it is larger than the sum of its proper divisors (5696883).

12604257 is a wasteful number, since it uses less digits than its factorization.

12604257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7312 (or 7309 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 12604257 is about 3550.2474561641. The cubic root of 12604257 is about 232.7228802725.

Adding to 12604257 its reverse (75240621), we get a palindrome (87844878).

The spelling of 12604257 in words is "twelve million, six hundred four thousand, two hundred fifty-seven".