12899687 has 2 divisors, whose sum is σ = 12899688. Its totient is φ = 12899686.

The previous prime is 12899671. The next prime is 12899713. The reversal of 12899687 is 78699821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12899687 - 2⁴ = 12899671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12899647) 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, 6449843 + 6449844.

It is an arithmetic number, because the mean of its divisors is an integer number (6449844).

Almost surely, 2^12899687 is an apocalyptic number.

12899687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12899687 is an equidigital number, since it uses as much as digits as its factorization.

12899687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 50.

The square root of 12899687 is about 3591.6134257462. The cubic root of 12899687 is about 234.5271130356.

The spelling of 12899687 in words is "twelve million, eight hundred ninety-nine thousand, six hundred eighty-seven".