111161666 has 32 divisors (see below), whose sum is σ = 218833920. Its totient is φ = 41029200.

The previous prime is 111161641. The next prime is 111161671. The reversal of 111161666 is 666161111.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16070 + ... + 21921.

It is an arithmetic number, because the mean of its divisors is an integer number (6838560).

Almost surely, 2^111161666 is an apocalyptic number.

111161666 is a deficient number, since it is larger than the sum of its proper divisors (107672254).

111161666 is a wasteful number, since it uses less digits than its factorization.

111161666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38030.

The product of its digits is 1296, while the sum is 29.

The square root of 111161666 is about 10543.3232901206. The cubic root of 111161666 is about 480.8227584804.

The spelling of 111161666 in words is "one hundred eleven million, one hundred sixty-one thousand, six hundred sixty-six".