6600606666 has 8 divisors (see below), whose sum is σ = 13201213344. Its totient is φ = 2200202220.

The previous prime is 6600606653. The next prime is 6600606673. The reversal of 6600606666 is 6666060066.

It is a sphenic number, since it is the product of 3 distinct primes.

6600606666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550050550 + ... + 550050561.

It is an arithmetic number, because the mean of its divisors is an integer number (1650151668).

Almost surely, 2^6600606666 is an apocalyptic number.

6600606666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6600606666 is a wasteful number, since it uses less digits than its factorization.

6600606666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100101116.

The product of its (nonzero) digits is 279936, while the sum is 42.

The square root of 6600606666 is about 81244.1177316857. The cubic root of 6600606666 is about 1875.8349268588.

The spelling of 6600606666 in words is "six billion, six hundred million, six hundred six thousand, six hundred sixty-six".