12937687 has 4 divisors (see below), whose sum is σ = 14785936. Its totient is φ = 11089440.

The previous prime is 12937669. The next prime is 12937723. The reversal of 12937687 is 78673921.

It is a happy number.

12937687 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78673921 = 457 ⋅172153.

It is a cyclic number.

It is not a de Polignac number, because 12937687 - 2¹¹ = 12935639 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 (12937667) 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, 924114 + ... + 924127.

It is an arithmetic number, because the mean of its divisors is an integer number (3696484).

Almost surely, 2^12937687 is an apocalyptic number.

12937687 is a deficient number, since it is larger than the sum of its proper divisors (1848249).

12937687 is an equidigital number, since it uses as much as digits as its factorization.

12937687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848248.

The product of its digits is 127008, while the sum is 43.

The square root of 12937687 is about 3596.8996371876. The cubic root of 12937687 is about 234.7571778826.

The spelling of 12937687 in words is "twelve million, nine hundred thirty-seven thousand, six hundred eighty-seven".