12617687 has 2 divisors, whose sum is σ = 12617688. Its totient is φ = 12617686.

The previous prime is 12617677. The next prime is 12617699. The reversal of 12617687 is 78671621.

12617687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12617687 - 2¹⁶ = 12552151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12617687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12617677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308843 + 6308844.

It is an arithmetic number, because the mean of its divisors is an integer number (6308844).

Almost surely, 2^12617687 is an apocalyptic number.

12617687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12617687 is an equidigital number, since it uses as much as digits as its factorization.

12617687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 12617687 is about 3552.1383700526. The cubic root of 12617687 is about 232.8055073527.

The spelling of 12617687 in words is "twelve million, six hundred seventeen thousand, six hundred eighty-seven".