12769565 has 16 divisors (see below), whose sum is σ = 15685488. Its totient is φ = 9977856.

The previous prime is 12769553. The next prime is 12769579. The reversal of 12769565 is 56596721.

12769565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3853369 + 8916196 = 1963^2 + 2986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12769565 - 2¹⁸ = 12507421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54689 + ... + 54921.

It is an arithmetic number, because the mean of its divisors is an integer number (980343).

Almost surely, 2^12769565 is an apocalyptic number.

It is an amenable number.

12769565 is a deficient number, since it is larger than the sum of its proper divisors (2915923).

12769565 is a wasteful number, since it uses less digits than its factorization.

12769565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448.

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

The square root of 12769565 is about 3573.4528120573. The cubic root of 12769565 is about 233.7358709181.

The spelling of 12769565 in words is "twelve million, seven hundred sixty-nine thousand, five hundred sixty-five".