12668787 has 12 divisors (see below), whose sum is σ = 18411120. Its totient is φ = 8394288.

The previous prime is 12668783. The next prime is 12668797. The reversal of 12668787 is 78786621.

It is not a de Polignac number, because 12668787 - 2² = 12668783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12668783) 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 11 ways as a sum of consecutive naturals, for example, 2712 + ... + 5717.

It is an arithmetic number, because the mean of its divisors is an integer number (1534260).

Almost surely, 2^12668787 is an apocalyptic number.

12668787 is a deficient number, since it is larger than the sum of its proper divisors (5742333).

12668787 is a wasteful number, since it uses less digits than its factorization.

12668787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602 (or 8599 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 12668787 is about 3559.3239526629. The cubic root of 12668787 is about 233.1193614393.

The spelling of 12668787 in words is "twelve million, six hundred sixty-eight thousand, seven hundred eighty-seven".