6568866720 has 480 divisors, whose sum is σ = 25244448768. Its totient is φ = 1598994432.

The previous prime is 6568866719. The next prime is 6568866721. The reversal of 6568866720 is 276688656.

6568866720 is a `hidden beast` number, since 6 + 568 + 8 + 6 + 6 + 72 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (6568866719) and next prime (6568866721).

It is a tau number, because it is divible by the number of its divisors (480).

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 (6568866721) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21396807 + ... + 21397113.

Almost surely, 2^6568866720 is an apocalyptic number.

6568866720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6568866720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12622224384).

6568866720 is an abundant number, since it is smaller than the sum of its proper divisors (18675582048).

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

6568866720 is a wasteful number, since it uses less digits than its factorization.

6568866720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The square root of 6568866720 is about 81048.5454527100. The cubic root of 6568866720 is about 1872.8233557617.

The spelling of 6568866720 in words is "six billion, five hundred sixty-eight million, eight hundred sixty-six thousand, seven hundred twenty".