12708657 has 36 divisors (see below), whose sum is σ = 20666100. Its totient is φ = 7768224.

The previous prime is 12708629. The next prime is 12708671. The reversal of 12708657 is 75680721.

12708657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1679616 + 11029041 = 1296^2 + 3321^2 .

It is not a de Polignac number, because 12708657 - 2⁶ = 12708593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12708617) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 85219 + ... + 85367.

Almost surely, 2^12708657 is an apocalyptic number.

It is an amenable number.

12708657 is a deficient number, since it is larger than the sum of its proper divisors (7957443).

12708657 is an frugal number, since it uses more digits than its factorization.

12708657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 12708657 is about 3564.9203357158. The cubic root of 12708657 is about 233.3636556965.

The spelling of 12708657 in words is "twelve million, seven hundred eight thousand, six hundred fifty-seven".