6568255656 has 80 divisors (see below), whose sum is σ = 18744412500. Its totient is φ = 2148097536.

The previous prime is 6568255649. The next prime is 6568255657. The reversal of 6568255656 is 6565528656.

6568255656 is a `hidden beast` number, since 6 + 5 + 6 + 82 + 556 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6453551556 + 114704100 = 80334^2 + 10710^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6568255657) 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, 61281 + ... + 129968.

Almost surely, 2^6568255656 is an apocalyptic number.

It is an amenable number.

6568255656 is an abundant number, since it is smaller than the sum of its proper divisors (12176156844).

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

6568255656 is a wasteful number, since it uses less digits than its factorization.

6568255656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191320 (or 191307 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 54.

The square root of 6568255656 is about 81044.7756243424. The cubic root of 6568255656 is about 1872.7652812887.

The spelling of 6568255656 in words is "six billion, five hundred sixty-eight million, two hundred fifty-five thousand, six hundred fifty-six".