12985686 has 36 divisors (see below), whose sum is σ = 32731452. Its totient is φ = 3709944.

The previous prime is 12985673. The next prime is 12985697. The reversal of 12985686 is 68658921.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 6480 + ... + 8243.

It is an arithmetic number, because the mean of its divisors is an integer number (909207).

Almost surely, 2^12985686 is an apocalyptic number.

12985686 is an abundant number, since it is smaller than the sum of its proper divisors (19745766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12985686 is a wasteful number, since it uses less digits than its factorization.

12985686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14745 (or 14735 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 12985686 is about 3603.5657341028. The cubic root of 12985686 is about 235.0471370663.

The spelling of 12985686 in words is "twelve million, nine hundred eighty-five thousand, six hundred eighty-six".