6660566576 has 40 divisors (see below), whose sum is σ = 13146480000. Its totient is φ = 3268177920.

The previous prime is 6660566569. The next prime is 6660566609. The reversal of 6660566576 is 6756650666.

It is a super-2 number, since 2×6660566576² = 88726294226656727552, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430625 + ... + 445823.

It is an arithmetic number, because the mean of its divisors is an integer number (328662000).

Almost surely, 2^6660566576 is an apocalyptic number.

It is an amenable number.

6660566576 is a deficient number, since it is larger than the sum of its proper divisors (6485913424).

6660566576 is a wasteful number, since it uses less digits than its factorization.

6660566576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15717 (or 15711 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 53.

The square root of 6660566576 is about 81612.2942699199. The cubic root of 6660566576 is about 1881.4978420784.

The spelling of 6660566576 in words is "six billion, six hundred sixty million, five hundred sixty-six thousand, five hundred seventy-six".