6600566666 has 16 divisors (see below), whose sum is σ = 9942032448. Its totient is φ = 3286584000.

The previous prime is 6600566627. The next prime is 6600566669. The reversal of 6600566666 is 6666650066.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6600566666.

It is not an unprimeable number, because it can be changed into a prime (6600566669) 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, 499541 + ... + 512583.

It is an arithmetic number, because the mean of its divisors is an integer number (621377028).

Almost surely, 2^6600566666 is an apocalyptic number.

6600566666 is a deficient number, since it is larger than the sum of its proper divisors (3341465782).

6600566666 is a wasteful number, since it uses less digits than its factorization.

6600566666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14077.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The square root of 6600566666 is about 81243.8715596444. The cubic root of 6600566666 is about 1875.8311376340.

The spelling of 6600566666 in words is "six billion, six hundred million, five hundred sixty-six thousand, six hundred sixty-six".