6616666166 has 16 divisors (see below), whose sum is σ = 10828790208. Its totient is φ = 3007153800.

The previous prime is 6616666159. The next prime is 6616666193.

6616666166 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183461 + ... + 216543.

It is an arithmetic number, because the mean of its divisors is an integer number (676799388).

Almost surely, 2^6616666166 is an apocalyptic number.

6616666166 is a deficient number, since it is larger than the sum of its proper divisors (4212124042).

6616666166 is a wasteful number, since it uses less digits than its factorization.

6616666166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42187.

The product of its digits is 1679616, while the sum is 50.

The square root of 6616666166 is about 81342.8925352424. The cubic root of 6616666166 is about 1877.3550180570.

The spelling of 6616666166 in words is "six billion, six hundred sixteen million, six hundred sixty-six thousand, one hundred sixty-six".