6564563379 has 64 divisors (see below), whose sum is σ = 11596124160. Its totient is φ = 3623616000.

The previous prime is 6564563363. The next prime is 6564563399. The reversal of 6564563379 is 9733654656.

6564563379 is a `hidden beast` number, since 6 + 5 + 6 + 4 + 563 + 3 + 79 = 666.

It is not a de Polignac number, because 6564563379 - 2⁴ = 6564563363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6564563399) 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 in 63 ways as a sum of consecutive naturals, for example, 135549 + ... + 177489.

It is an arithmetic number, because the mean of its divisors is an integer number (181189440).

Almost surely, 2^6564563379 is an apocalyptic number.

6564563379 is a deficient number, since it is larger than the sum of its proper divisors (5031560781).

6564563379 is a wasteful number, since it uses less digits than its factorization.

6564563379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42009 (or 42003 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 54.

The square root of 6564563379 is about 81021.9931808642. The cubic root of 6564563379 is about 1872.4142969670.

The spelling of 6564563379 in words is "six billion, five hundred sixty-four million, five hundred sixty-three thousand, three hundred seventy-nine".