111661166 has 8 divisors (see below), whose sum is σ = 167541384. Its totient is φ = 55814040.

The previous prime is 111661141. The next prime is 111661181. The reversal of 111661166 is 661166111.

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

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3536 + ... + 15356.

It is an arithmetic number, because the mean of its divisors is an integer number (20942673).

Almost surely, 2^111661166 is an apocalyptic number.

111661166 is a deficient number, since it is larger than the sum of its proper divisors (55880218).

111661166 is a wasteful number, since it uses less digits than its factorization.

111661166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16546.

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

The square root of 111661166 is about 10566.9847165594. The cubic root of 111661166 is about 481.5418676821.

The spelling of 111661166 in words is "one hundred eleven million, six hundred sixty-one thousand, one hundred sixty-six".