8564664697 has 2 divisors, whose sum is σ = 8564664698. Its totient is φ = 8564664696.

The previous prime is 8564664653. The next prime is 8564664733. The reversal of 8564664697 is 7964664658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7541880336 + 1022784361 = 86844^2 + 31981^2 .

It is a cyclic number.

It is not a de Polignac number, because 8564664697 - 2²³ = 8556276089 is a prime.

It is not a weakly prime, because it can be changed into another prime (8564664197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4282332348 + 4282332349.

It is an arithmetic number, because the mean of its divisors is an integer number (4282332349).

Almost surely, 2^8564664697 is an apocalyptic number.

It is an amenable number.

8564664697 is a deficient number, since it is larger than the sum of its proper divisors (1).

8564664697 is an equidigital number, since it uses as much as digits as its factorization.

8564664697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 61.

The square root of 8564664697 is about 92545.4736710554. The cubic root of 8564664697 is about 2045.9897566428.

The spelling of 8564664697 in words is "eight billion, five hundred sixty-four million, six hundred sixty-four thousand, six hundred ninety-seven".