6564705271 has 2 divisors, whose sum is σ = 6564705272. Its totient is φ = 6564705270.

The previous prime is 6564705221. The next prime is 6564705289. The reversal of 6564705271 is 1725074656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6564705271 - 2⁹ = 6564704759 is a prime.

It is a super-3 number, since 3×6564705271³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6564705221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282352635 + 3282352636.

It is an arithmetic number, because the mean of its divisors is an integer number (3282352636).

Almost surely, 2^6564705271 is an apocalyptic number.

6564705271 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564705271 is an equidigital number, since it uses as much as digits as its factorization.

6564705271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 6564705271 is about 81022.8688149216. The cubic root of 6564705271 is about 1872.4277875162.

The spelling of 6564705271 in words is "six billion, five hundred sixty-four million, seven hundred five thousand, two hundred seventy-one".