6564794731 has 8 divisors (see below), whose sum is σ = 7180009200. Its totient is φ = 5952649440.

The previous prime is 6564794729. The next prime is 6564794773. The reversal of 6564794731 is 1374974656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6564794731 - 2¹ = 6564794729 is a prime.

It is a super-2 number, since 2×6564794731² = 86193059720330724722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6564794531) 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 7 ways as a sum of consecutive naturals, for example, 762816 + ... + 771373.

It is an arithmetic number, because the mean of its divisors is an integer number (897501150).

Almost surely, 2^6564794731 is an apocalyptic number.

6564794731 is a deficient number, since it is larger than the sum of its proper divisors (615214469).

6564794731 is a wasteful number, since it uses less digits than its factorization.

6564794731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534589.

The product of its digits is 3810240, while the sum is 52.

The square root of 6564794731 is about 81023.4208793976. The cubic root of 6564794731 is about 1872.4362929313.

The spelling of 6564794731 in words is "six billion, five hundred sixty-four million, seven hundred ninety-four thousand, seven hundred thirty-one".