8522997647 has 2 divisors, whose sum is σ = 8522997648. Its totient is φ = 8522997646.

The previous prime is 8522997611. The next prime is 8522997649. The reversal of 8522997647 is 7467992258.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8522997647 - 2¹⁶ = 8522932111 is a prime.

Together with 8522997649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8522997649) 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, 4261498823 + 4261498824.

It is an arithmetic number, because the mean of its divisors is an integer number (4261498824).

Almost surely, 2^8522997647 is an apocalyptic number.

8522997647 is a deficient number, since it is larger than the sum of its proper divisors (1).

8522997647 is an equidigital number, since it uses as much as digits as its factorization.

8522997647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 59.

The square root of 8522997647 is about 92320.0825768695. The cubic root of 8522997647 is about 2042.6664516100. Note that the first 3 decimals are identical.

The spelling of 8522997647 in words is "eight billion, five hundred twenty-two million, nine hundred ninety-seven thousand, six hundred forty-seven".