12817585 has 16 divisors (see below), whose sum is σ = 16866432. Its totient is φ = 9273600.

The previous prime is 12817579. The next prime is 12817589. The reversal of 12817585 is 58571821.

It is not a de Polignac number, because 12817585 - 2⁹ = 12817073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12817589) 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 15 ways as a sum of consecutive naturals, for example, 12772 + ... + 13738.

It is an arithmetic number, because the mean of its divisors is an integer number (1054152).

Almost surely, 2^12817585 is an apocalyptic number.

It is an amenable number.

12817585 is a deficient number, since it is larger than the sum of its proper divisors (4048847).

12817585 is a wasteful number, since it uses less digits than its factorization.

12817585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224.

The product of its digits is 22400, while the sum is 37.

The square root of 12817585 is about 3580.1654989679. The cubic root of 12817585 is about 234.0284926466.

The spelling of 12817585 in words is "twelve million, eight hundred seventeen thousand, five hundred eighty-five".