12687868 has 6 divisors (see below), whose sum is σ = 22203776. Its totient is φ = 6343932.

The previous prime is 12687863. The next prime is 12687869. The reversal of 12687868 is 86878621.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12687863) 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 as a sum of consecutive naturals, namely, 1585980 + ... + 1585987.

Almost surely, 2^12687868 is an apocalyptic number.

It is an amenable number.

12687868 is a deficient number, since it is larger than the sum of its proper divisors (9515908).

12687868 is a wasteful number, since it uses less digits than its factorization.

12687868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171971 (or 3171969 counting only the distinct ones).

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

The square root of 12687868 is about 3562.0033688923. The cubic root of 12687868 is about 233.2363397320.

The spelling of 12687868 in words is "twelve million, six hundred eighty-seven thousand, eight hundred sixty-eight".