12687886 has 8 divisors (see below), whose sum is σ = 19047024. Its totient is φ = 6338880.

The previous prime is 12687869. The next prime is 12687887. The reversal of 12687886 is 68878621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12687886² = 321964902297992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12687887) 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, 3151 + ... + 5941.

It is an arithmetic number, because the mean of its divisors is an integer number (2380878).

Almost surely, 2^12687886 is an apocalyptic number.

12687886 is a deficient number, since it is larger than the sum of its proper divisors (6359138).

12687886 is a wasteful number, since it uses less digits than its factorization.

12687886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5066.

The product of its digits is 258048, while the sum is 46.

The square root of 12687886 is about 3562.0058955594. The cubic root of 12687886 is about 233.2364500277.

The spelling of 12687886 in words is "twelve million, six hundred eighty-seven thousand, eight hundred eighty-six".