12936687 has 4 divisors (see below), whose sum is σ = 17248920. Its totient is φ = 8624456.

The previous prime is 12936659. The next prime is 12936691. The reversal of 12936687 is 78663921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12936687 - 2⁷ = 12936559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12936617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2156112 + ... + 2156117.

It is an arithmetic number, because the mean of its divisors is an integer number (4312230).

Almost surely, 2^12936687 is an apocalyptic number.

12936687 is a deficient number, since it is larger than the sum of its proper divisors (4312233).

12936687 is an equidigital number, since it uses as much as digits as its factorization.

12936687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312232.

The product of its digits is 108864, while the sum is 42.

The square root of 12936687 is about 3596.7606258966. The cubic root of 12936687 is about 234.7511293201.

The spelling of 12936687 in words is "twelve million, nine hundred thirty-six thousand, six hundred eighty-seven".