8522645647 has 2 divisors, whose sum is σ = 8522645648. Its totient is φ = 8522645646.

The previous prime is 8522645633. The next prime is 8522645671. The reversal of 8522645647 is 7465462258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8522645647 - 2²³ = 8514257039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8522645647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8522645627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4261322823 + 4261322824.

It is an arithmetic number, because the mean of its divisors is an integer number (4261322824).

Almost surely, 2^8522645647 is an apocalyptic number.

8522645647 is a deficient number, since it is larger than the sum of its proper divisors (1).

8522645647 is an equidigital number, since it uses as much as digits as its factorization.

8522645647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3225600, while the sum is 49.

The square root of 8522645647 is about 92318.1761464123. The cubic root of 8522645647 is about 2042.6383304990.

The spelling of 8522645647 in words is "eight billion, five hundred twenty-two million, six hundred forty-five thousand, six hundred forty-seven".