111885 has 8 divisors (see below), whose sum is σ = 179040. Its totient is φ = 59664.

The previous prime is 111871. The next prime is 111893. The reversal of 111885 is 588111.

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

It is not a de Polignac number, because 111885 - 2⁴ = 111869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3715 + ... + 3744.

It is an arithmetic number, because the mean of its divisors is an integer number (22380).

2¹¹¹⁸⁸⁵ is an apocalyptic number.

111885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111885 is a deficient number, since it is larger than the sum of its proper divisors (67155).

111885 is an equidigital number, since it uses as much as digits as its factorization.

111885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7467.

The product of its digits is 320, while the sum is 24.

The square root of 111885 is about 334.4921523743. The cubic root of 111885 is about 48.1863416360.

Adding to 111885 its reverse (588111), we get a palindrome (699996).

The spelling of 111885 in words is "one hundred eleven thousand, eight hundred eighty-five".