12816986 has 16 divisors (see below), whose sum is σ = 23662464. Its totient is φ = 5070384.

The previous prime is 12816977. The next prime is 12816989. The reversal of 12816986 is 68961821.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12816989) 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, 35030 + ... + 35393.

It is an arithmetic number, because the mean of its divisors is an integer number (1478904).

Almost surely, 2^12816986 is an apocalyptic number.

12816986 is a deficient number, since it is larger than the sum of its proper divisors (10845478).

12816986 is a wasteful number, since it uses less digits than its factorization.

12816986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70445.

The product of its digits is 41472, while the sum is 41.

The square root of 12816986 is about 3580.0818426399. The cubic root of 12816986 is about 234.0248469975.

The spelling of 12816986 in words is "twelve million, eight hundred sixteen thousand, nine hundred eighty-six".