12996657 has 24 divisors (see below), whose sum is σ = 19918080. Its totient is φ = 8151840.

The previous prime is 12996647. The next prime is 12996661. The reversal of 12996657 is 75669921.

It is a happy number.

It is not a de Polignac number, because 12996657 - 2¹⁴ = 12980273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12996637) 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, 9694 + ... + 10952.

It is an arithmetic number, because the mean of its divisors is an integer number (829920).

Almost surely, 2^12996657 is an apocalyptic number.

It is an amenable number.

12996657 is a deficient number, since it is larger than the sum of its proper divisors (6921423).

12996657 is a wasteful number, since it uses less digits than its factorization.

12996657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1330 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 12996657 is about 3605.0876549676. The cubic root of 12996657 is about 235.1133118856.

The spelling of 12996657 in words is "twelve million, nine hundred ninety-six thousand, six hundred fifty-seven".