12085689 has 32 divisors (see below), whose sum is σ = 20312064. Its totient is φ = 6209280.

The previous prime is 12085687. The next prime is 12085699. The reversal of 12085689 is 98658021.

It is not a de Polignac number, because 12085689 - 2¹ = 12085687 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12085681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25872 + ... + 26334.

It is an arithmetic number, because the mean of its divisors is an integer number (634752).

Almost surely, 2^12085689 is an apocalyptic number.

It is an amenable number.

12085689 is a deficient number, since it is larger than the sum of its proper divisors (8226375).

12085689 is a wasteful number, since it uses less digits than its factorization.

12085689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 12085689 is about 3476.4477559716. The cubic root of 12085689 is about 229.4864977508.

The spelling of 12085689 in words is "twelve million, eighty-five thousand, six hundred eighty-nine".