111662166 has 64 divisors (see below), whose sum is σ = 281304576. Its totient is φ = 28704000.

The previous prime is 111662153. The next prime is 111662167. The reversal of 111662166 is 661266111.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111662167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45466 + ... + 47858.

It is an arithmetic number, because the mean of its divisors is an integer number (4395384).

Almost surely, 2^111662166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111662166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140652288).

111662166 is an abundant number, since it is smaller than the sum of its proper divisors (169642410).

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

111662166 is a wasteful number, since it uses less digits than its factorization.

111662166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517.

The product of its digits is 2592, while the sum is 30.

The square root of 111662166 is about 10567.0320336412. The cubic root of 111662166 is about 481.5433051870.

The spelling of 111662166 in words is "one hundred eleven million, six hundred sixty-two thousand, one hundred sixty-six".