12965657 has 8 divisors (see below), whose sum is σ = 14088960. Its totient is φ = 11886480.

The previous prime is 12965633. The next prime is 12965671. The reversal of 12965657 is 75656921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12965657 - 2⁶ = 12965593 is a prime.

It is a super-2 number, since 2×12965657² = 336216522883298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12965627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10418 + ... + 11595.

It is an arithmetic number, because the mean of its divisors is an integer number (1761120).

Almost surely, 2^12965657 is an apocalyptic number.

It is an amenable number.

12965657 is a deficient number, since it is larger than the sum of its proper divisors (1123303).

12965657 is a wasteful number, since it uses less digits than its factorization.

12965657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22063.

The product of its digits is 113400, while the sum is 41.

The square root of 12965657 is about 3600.7856087249. The cubic root of 12965657 is about 234.9262300515.

The spelling of 12965657 in words is "twelve million, nine hundred sixty-five thousand, six hundred fifty-seven".