111165666 has 8 divisors (see below), whose sum is σ = 222331344. Its totient is φ = 37055220.

The previous prime is 111165661. The next prime is 111165673. The reversal of 111165666 is 666561111.

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

111165666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (111165661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9263800 + ... + 9263811.

It is an arithmetic number, because the mean of its divisors is an integer number (27791418).

Almost surely, 2^111165666 is an apocalyptic number.

111165666 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.

111165666 is a wasteful number, since it uses less digits than its factorization.

111165666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18527616.

The product of its digits is 6480, while the sum is 33.

The square root of 111165666 is about 10543.5129819240. The cubic root of 111165666 is about 480.8285256603.

The spelling of 111165666 in words is "one hundred eleven million, one hundred sixty-five thousand, six hundred sixty-six".