12657889 has 16 divisors (see below), whose sum is σ = 13999104. Its totient is φ = 11404800.

The previous prime is 12657871. The next prime is 12657901. The reversal of 12657889 is 98875621.

12657889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12657889 - 2⁹ = 12657377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12657859) 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, 29017 + ... + 29449.

It is an arithmetic number, because the mean of its divisors is an integer number (874944).

Almost surely, 2^12657889 is an apocalyptic number.

It is an amenable number.

12657889 is a deficient number, since it is larger than the sum of its proper divisors (1341215).

12657889 is a wasteful number, since it uses less digits than its factorization.

12657889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its digits is 241920, while the sum is 46.

The square root of 12657889 is about 3557.7927145915. The cubic root of 12657889 is about 233.0524972735.

The spelling of 12657889 in words is "twelve million, six hundred fifty-seven thousand, eight hundred eighty-nine".