6568858672 has 40 divisors (see below), whose sum is σ = 13184535600. Its totient is φ = 3166716672.

The previous prime is 6568858651. The next prime is 6568858679. The reversal of 6568858672 is 2768588656.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6568858672.

It is not an unprimeable number, because it can be changed into a prime (6568858679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333318 + ... + 352474.

It is an arithmetic number, because the mean of its divisors is an integer number (329613390).

Almost surely, 2^6568858672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6568858672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6592267800).

6568858672 is an abundant number, since it is smaller than the sum of its proper divisors (6615676928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6568858672 is a wasteful number, since it uses less digits than its factorization.

6568858672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19933 (or 19927 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 61.

The square root of 6568858672 is about 81048.4958034386. The cubic root of 6568858672 is about 1872.8225909170.

The spelling of 6568858672 in words is "six billion, five hundred sixty-eight million, eight hundred fifty-eight thousand, six hundred seventy-two".