12662687 has 2 divisors, whose sum is σ = 12662688. Its totient is φ = 12662686.

The previous prime is 12662681. The next prime is 12662711. The reversal of 12662687 is 78626621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12662687 - 2⁶ = 12662623 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12662687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12662681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6331343 + 6331344.

It is an arithmetic number, because the mean of its divisors is an integer number (6331344).

Almost surely, 2^12662687 is an apocalyptic number.

12662687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12662687 is an equidigital number, since it uses as much as digits as its factorization.

12662687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 12662687 is about 3558.4669451886. The cubic root of 12662687 is about 233.0819399035.

The spelling of 12662687 in words is "twelve million, six hundred sixty-two thousand, six hundred eighty-seven".