111085639 has 8 divisors (see below), whose sum is σ = 127083168. Its totient is φ = 95120160.

The previous prime is 111085621. The next prime is 111085651. The reversal of 111085639 is 936580111.

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

It is a cyclic number.

It is not a de Polignac number, because 111085639 - 2⁹ = 111085127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111085669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52 + ... + 14905.

It is an arithmetic number, because the mean of its divisors is an integer number (15885396).

Almost surely, 2^111085639 is an apocalyptic number.

111085639 is a deficient number, since it is larger than the sum of its proper divisors (15997529).

111085639 is a wasteful number, since it uses less digits than its factorization.

111085639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16025.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 111085639 is about 10539.7172163204. The cubic root of 111085639 is about 480.7131168202.

The spelling of 111085639 in words is "one hundred eleven million, eighty-five thousand, six hundred thirty-nine".