12936861 has 16 divisors (see below), whose sum is σ = 21904000. Its totient is φ = 7392384.

The previous prime is 12936857. The next prime is 12936877. The reversal of 12936861 is 16863921.

It is not a de Polignac number, because 12936861 - 2² = 12936857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12936461) 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 15 ways as a sum of consecutive naturals, for example, 34036 + ... + 34413.

It is an arithmetic number, because the mean of its divisors is an integer number (1369000).

Almost surely, 2^12936861 is an apocalyptic number.

It is an amenable number.

12936861 is a deficient number, since it is larger than the sum of its proper divisors (8967139).

12936861 is an equidigital number, since it uses as much as digits as its factorization.

12936861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68465 (or 68459 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12936861 is about 3596.7848142473. The cubic root of 12936861 is about 234.7521817923.

The spelling of 12936861 in words is "twelve million, nine hundred thirty-six thousand, eight hundred sixty-one".