6566708736 has 360 divisors, whose sum is σ = 22316785920. Its totient is φ = 1853300736.

The previous prime is 6566708723. The next prime is 6566708737. The reversal of 6566708736 is 6378076656.

6566708736 is a `hidden beast` number, since 6 + 566 + 7 + 0 + 8 + 73 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566708737) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28675470 + ... + 28675698.

It is an arithmetic number, because the mean of its divisors is an integer number (61991072).

Almost surely, 2^6566708736 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 6566708736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11158392960).

6566708736 is an abundant number, since it is smaller than the sum of its proper divisors (15750077184).

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

6566708736 is a wasteful number, since it uses less digits than its factorization.

6566708736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The square root of 6566708736 is about 81035.2314490432. The cubic root of 6566708736 is about 1872.6182485664.

The spelling of 6566708736 in words is "six billion, five hundred sixty-six million, seven hundred eight thousand, seven hundred thirty-six".