6566611056 has 40 divisors (see below), whose sum is σ = 17548705680. Its totient is φ = 2113391616.

The previous prime is 6566611049. The next prime is 6566611057. The reversal of 6566611056 is 6501166656.

It is a junction number, because it is equal to n+sod(n) for n = 6566610999 and 6566611017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566611057) 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, 2357305 + ... + 2360088.

It is an arithmetic number, because the mean of its divisors is an integer number (438717642).

Almost surely, 2^6566611056 is an apocalyptic number.

It is an amenable number.

6566611056 is an abundant number, since it is smaller than the sum of its proper divisors (10982094624).

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

6566611056 is a wasteful number, since it uses less digits than its factorization.

6566611056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717433 (or 4717427 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 6566611056 is about 81034.6287459874. The cubic root of 6566611056 is about 1872.6089634352.

The spelling of 6566611056 in words is "six billion, five hundred sixty-six million, six hundred eleven thousand, fifty-six".