6564056197 has 2 divisors, whose sum is σ = 6564056198. Its totient is φ = 6564056196.

The previous prime is 6564056189. The next prime is 6564056297. The reversal of 6564056197 is 7916504656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3543344676 + 3020711521 = 59526^2 + 54961^2 .

It is a cyclic number.

It is not a de Polignac number, because 6564056197 - 2³ = 6564056189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6564056197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6564056297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282028098 + 3282028099.

It is an arithmetic number, because the mean of its divisors is an integer number (3282028099).

Almost surely, 2^6564056197 is an apocalyptic number.

It is an amenable number.

6564056197 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564056197 is an equidigital number, since it uses as much as digits as its factorization.

6564056197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 6564056197 is about 81018.8632171546. The cubic root of 6564056197 is about 1872.3660744511.

The spelling of 6564056197 in words is "six billion, five hundred sixty-four million, fifty-six thousand, one hundred ninety-seven".