6606665056 has 24 divisors (see below), whose sum is σ = 13048714224. Its totient is φ = 3292705920.

The previous prime is 6606665029. The next prime is 6606665057. The reversal of 6606665056 is 6505666066.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6606664997 and 6606665015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606665057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321975 + ... + 341878.

It is an arithmetic number, because the mean of its divisors is an integer number (543696426).

Almost surely, 2^6606665056 is an apocalyptic number.

It is an amenable number.

6606665056 is a deficient number, since it is larger than the sum of its proper divisors (6442049168).

6606665056 is a wasteful number, since it uses less digits than its factorization.

6606665056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664174 (or 664166 counting only the distinct ones).

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

The square root of 6606665056 is about 81281.3942793798. The cubic root of 6606665056 is about 1876.4086652496.

The spelling of 6606665056 in words is "six billion, six hundred six million, six hundred sixty-five thousand, fifty-six".