666666116 has 24 divisors (see below), whose sum is σ = 1173703776. Its totient is φ = 331329600.

The previous prime is 666666113. The next prime is 666666151. The reversal of 666666116 is 611666666.

It is not an unprimeable number, because it can be changed into a prime (666666113) by changing a digit.

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, 633791 + ... + 634841.

It is an arithmetic number, because the mean of its divisors is an integer number (48904324).

Almost surely, 2^666666116 is an apocalyptic number.

It is an amenable number.

666666116 is a deficient number, since it is larger than the sum of its proper divisors (507037660).

666666116 is a wasteful number, since it uses less digits than its factorization.

666666116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1857 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 666666116 is about 25819.8783110998. The cubic root of 666666116 is about 873.5802242104.

The spelling of 666666116 in words is "six hundred sixty-six million, six hundred sixty-six thousand, one hundred sixteen".