12686447 has 2 divisors, whose sum is σ = 12686448. Its totient is φ = 12686446.

The previous prime is 12686441. The next prime is 12686477. The reversal of 12686447 is 74468621.

12686447 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 an emirp because it is prime and its reverse (74468621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12686447 - 2⁴ = 12686431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12686447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12686441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6343223 + 6343224.

It is an arithmetic number, because the mean of its divisors is an integer number (6343224).

Almost surely, 2^12686447 is an apocalyptic number.

12686447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12686447 is an equidigital number, since it uses as much as digits as its factorization.

12686447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 12686447 is about 3561.8038969039. The cubic root of 12686447 is about 233.2276321694.

The spelling of 12686447 in words is "twelve million, six hundred eighty-six thousand, four hundred forty-seven".