12815697 has 8 divisors (see below), whose sum is σ = 17222656. Its totient is φ = 8476272.

The previous prime is 12815689. The next prime is 12815701. The reversal of 12815697 is 79651821.

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

It is not a de Polignac number, because 12815697 - 2³ = 12815689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12815687) 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 7 ways as a sum of consecutive naturals, for example, 16438 + ... + 17199.

It is an arithmetic number, because the mean of its divisors is an integer number (2152832).

Almost surely, 2^12815697 is an apocalyptic number.

It is an amenable number.

12815697 is a deficient number, since it is larger than the sum of its proper divisors (4406959).

12815697 is a wasteful number, since it uses less digits than its factorization.

12815697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33767.

The product of its digits is 30240, while the sum is 39.

The square root of 12815697 is about 3579.9018142960. The cubic root of 12815697 is about 234.0170014676.

The spelling of 12815697 in words is "twelve million, eight hundred fifteen thousand, six hundred ninety-seven".