12579985 has 16 divisors (see below), whose sum is σ = 16607232. Its totient is φ = 9072000.

The previous prime is 12579971. The next prime is 12579991. The reversal of 12579985 is 58997521.

It is not a de Polignac number, because 12579985 - 2⁵ = 12579953 is a prime.

It is a Duffinian 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, 6085 + ... + 7885.

It is an arithmetic number, because the mean of its divisors is an integer number (1037952).

Almost surely, 2^12579985 is an apocalyptic number.

It is an amenable number.

12579985 is a deficient number, since it is larger than the sum of its proper divisors (4027247).

12579985 is a wasteful number, since it uses less digits than its factorization.

12579985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944.

The product of its digits is 226800, while the sum is 46.

The square root of 12579985 is about 3546.8274556285. The cubic root of 12579985 is about 232.5733995719.

The spelling of 12579985 in words is "twelve million, five hundred seventy-nine thousand, nine hundred eighty-five".