12616687 has 2 divisors, whose sum is σ = 12616688. Its totient is φ = 12616686.

The previous prime is 12616649. The next prime is 12616697. The reversal of 12616687 is 78661621.

12616687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78661621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12616687 - 2⁷ = 12616559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12616697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308343 + 6308344.

It is an arithmetic number, because the mean of its divisors is an integer number (6308344).

Almost surely, 2^12616687 is an apocalyptic number.

12616687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12616687 is an equidigital number, since it uses as much as digits as its factorization.

12616687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 12616687 is about 3551.9976069812. The cubic root of 12616687 is about 232.7993569476.

It can be divided in two parts, 126166 and 87, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 12616687 in words is "twelve million, six hundred sixteen thousand, six hundred eighty-seven".