12706565 has 8 divisors (see below), whose sum is σ = 16144920. Its totient is φ = 9567232.

The previous prime is 12706517. The next prime is 12706567. The reversal of 12706565 is 56560721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 879844 + 11826721 = 938^2 + 3439^2 .

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 12706565 - 2⁶ = 12706501 is a prime.

It is a super-2 number, since 2×12706565² = 322913588198450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12706567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74660 + ... + 74829.

It is an arithmetic number, because the mean of its divisors is an integer number (2018115).

Almost surely, 2^12706565 is an apocalyptic number.

It is an amenable number.

12706565 is a deficient number, since it is larger than the sum of its proper divisors (3438355).

12706565 is a wasteful number, since it uses less digits than its factorization.

12706565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149511.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 12706565 is about 3564.6269089485. The cubic root of 12706565 is about 233.3508501589.

The spelling of 12706565 in words is "twelve million, seven hundred six thousand, five hundred sixty-five".