12564347 has 2 divisors, whose sum is σ = 12564348. Its totient is φ = 12564346.

The previous prime is 12564319. The next prime is 12564389. The reversal of 12564347 is 74346521.

12564347 is digitally balanced in base 3, 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 (74346521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12564347 - 2²⁰ = 11515771 is a prime.

It is not a weakly prime, because it can be changed into another prime (12564317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282173 + 6282174.

It is an arithmetic number, because the mean of its divisors is an integer number (6282174).

Almost surely, 2^12564347 is an apocalyptic number.

12564347 is a deficient number, since it is larger than the sum of its proper divisors (1).

12564347 is an equidigital number, since it uses as much as digits as its factorization.

12564347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 12564347 is about 3544.6222647837. The cubic root of 12564347 is about 232.4769900534.

The spelling of 12564347 in words is "twelve million, five hundred sixty-four thousand, three hundred forty-seven".