6566660560 has 40 divisors (see below), whose sum is σ = 15759991296. Its totient is φ = 2541932160.

The previous prime is 6566660557. The next prime is 6566660561. The reversal of 6566660560 is 650666656.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 6566660560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566660561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321444 + ... + 1326403.

Almost surely, 2^6566660560 is an apocalyptic number.

It is an amenable number.

6566660560 is an abundant number, since it is smaller than the sum of its proper divisors (9193330736).

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

6566660560 is a wasteful number, since it uses less digits than its factorization.

6566660560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647891 (or 2647885 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The square root of 6566660560 is about 81034.9341950742. The cubic root of 6566660560 is about 1872.6136691299.

The spelling of 6566660560 in words is "six billion, five hundred sixty-six million, six hundred sixty thousand, five hundred sixty".