12756965 has 24 divisors (see below), whose sum is σ = 17146368. Its totient is φ = 9097920.

The previous prime is 12756959. The next prime is 12756967. The reversal of 12756965 is 56965721.

It is not a de Polignac number, because 12756965 - 2⁴ = 12756949 is a prime.

It is a super-2 number, since 2×12756965² = 325480312022450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12756967) 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 23 ways as a sum of consecutive naturals, for example, 25952 + ... + 26438.

It is an arithmetic number, because the mean of its divisors is an integer number (714432).

Almost surely, 2^12756965 is an apocalyptic number.

It is an amenable number.

12756965 is a deficient number, since it is larger than the sum of its proper divisors (4389403).

12756965 is a wasteful number, since it uses less digits than its factorization.

12756965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 536 counting only the distinct ones).

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

The square root of 12756965 is about 3571.6893761916. The cubic root of 12756965 is about 233.6589682421.

The spelling of 12756965 in words is "twelve million, seven hundred fifty-six thousand, nine hundred sixty-five".