12945765 has 32 divisors (see below), whose sum is σ = 23869440. Its totient is φ = 5868864.

The previous prime is 12945739. The next prime is 12945767. The reversal of 12945765 is 56754921.

It is not a de Polignac number, because 12945765 - 2⁶ = 12945701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14152 + ... + 15038.

It is an arithmetic number, because the mean of its divisors is an integer number (745920).

Almost surely, 2^12945765 is an apocalyptic number.

12945765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12945765 is a deficient number, since it is larger than the sum of its proper divisors (10923675).

12945765 is a wasteful number, since it uses less digits than its factorization.

12945765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041.

The product of its digits is 75600, while the sum is 39.

The square root of 12945765 is about 3598.0223734713. The cubic root of 12945765 is about 234.8060267465.

The spelling of 12945765 in words is "twelve million, nine hundred forty-five thousand, seven hundred sixty-five".