6564726529 has 3 divisors (see below), whose sum is σ = 6564807553. Its totient is φ = 6564645506.

The previous prime is 6564726523. The next prime is 6564726533. The reversal of 6564726529 is 9256274656.

The square root of 6564726529 is 81023.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6564726529 - 2¹⁵ = 6564693761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6564726523) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 40512 + ... + 121534.

Almost surely, 2^6564726529 is an apocalyptic number.

6564726529 is the 81023-rd square number.

6564726529 is the 40512-nd centered octagonal number.

It is an amenable number.

6564726529 is a deficient number, since it is larger than the sum of its proper divisors (81024).

6564726529 is an frugal number, since it uses more digits than its factorization.

6564726529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162046 (or 81023 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 52.

The cubic root of 6564726529 is about 1872.4298086289.

The spelling of 6564726529 in words is "six billion, five hundred sixty-four million, seven hundred twenty-six thousand, five hundred twenty-nine".