12686747 has 2 divisors, whose sum is σ = 12686748. Its totient is φ = 12686746.

The previous prime is 12686647. The next prime is 12686749. The reversal of 12686747 is 74768621.

12686747 is nontrivially palindromic in base 11.

12686747 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 a cyclic number.

It is not a de Polignac number, because 12686747 - 2⁸ = 12686491 is a prime.

Together with 12686749, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12686749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6343373 + 6343374.

It is an arithmetic number, because the mean of its divisors is an integer number (6343374).

Almost surely, 2^12686747 is an apocalyptic number.

12686747 is a deficient number, since it is larger than the sum of its proper divisors (1).

12686747 is an equidigital number, since it uses as much as digits as its factorization.

12686747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 12686747 is about 3561.8460101470. The cubic root of 12686747 is about 233.2294705549.

The spelling of 12686747 in words is "twelve million, six hundred eighty-six thousand, seven hundred forty-seven".