6568747893 has 20 divisors (see below), whose sum is σ = 9869315148. Its totient is φ = 4353842880.

The previous prime is 6568747879. The next prime is 6568747901. The reversal of 6568747893 is 3987478656.

It can be written as a sum of positive squares in 2 ways, for example, as 4856277969 + 1712469924 = 69687^2 + 41382^2 .

It is not a de Polignac number, because 6568747893 - 2¹⁰ = 6568746869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6568747893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6568747873) 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 19 ways as a sum of consecutive naturals, for example, 220368 + ... + 248393.

Almost surely, 2^6568747893 is an apocalyptic number.

It is an amenable number.

6568747893 is a deficient number, since it is larger than the sum of its proper divisors (3300567255).

6568747893 is a wasteful number, since it uses less digits than its factorization.

6568747893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468946 (or 468937 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The square root of 6568747893 is about 81047.8123887376. The cubic root of 6568747893 is about 1872.8120629298.

The spelling of 6568747893 in words is "six billion, five hundred sixty-eight million, seven hundred forty-seven thousand, eight hundred ninety-three".