6564329613 has 16 divisors (see below), whose sum is σ = 9759307840. Its totient is φ = 4360750992.

The previous prime is 6564329599. The next prime is 6564329617. The reversal of 6564329613 is 3169234656.

6564329613 is a `hidden beast` number, since 6 + 5 + 6 + 4 + 3 + 29 + 613 = 666.

It is not a de Polignac number, because 6564329613 - 2¹² = 6564325517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564329617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421906 + ... + 437187.

It is an arithmetic number, because the mean of its divisors is an integer number (609956740).

Almost surely, 2^6564329613 is an apocalyptic number.

It is an amenable number.

6564329613 is a deficient number, since it is larger than the sum of its proper divisors (3194978227).

6564329613 is a wasteful number, since it uses less digits than its factorization.

6564329613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859385 (or 859379 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 6564329613 is about 81020.5505597191. The cubic root of 6564329613 is about 1872.3920709650.

The spelling of 6564329613 in words is "six billion, five hundred sixty-four million, three hundred twenty-nine thousand, six hundred thirteen".