6564956089 has 2 divisors, whose sum is σ = 6564956090. Its totient is φ = 6564956088.

The previous prime is 6564956063. The next prime is 6564956093. The reversal of 6564956089 is 9806594656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3983503225 + 2581452864 = 63115^2 + 50808^2 .

It is a cyclic number.

It is not a de Polignac number, because 6564956089 - 2¹⁷ = 6564825017 is a prime.

It is not a weakly prime, because it can be changed into another prime (6564956059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282478044 + 3282478045.

It is an arithmetic number, because the mean of its divisors is an integer number (3282478045).

Almost surely, 2^6564956089 is an apocalyptic number.

It is an amenable number.

6564956089 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564956089 is an equidigital number, since it uses as much as digits as its factorization.

6564956089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13996800, while the sum is 58.

The square root of 6564956089 is about 81024.4166223985. The cubic root of 6564956089 is about 1872.4516338577.

The spelling of 6564956089 in words is "six billion, five hundred sixty-four million, nine hundred fifty-six thousand, eighty-nine".