111890687 has 8 divisors (see below), whose sum is σ = 118187520. Its totient is φ = 105761880.

The previous prime is 111890663. The next prime is 111890689. The reversal of 111890687 is 786098111.

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 111890687 - 2⁸ = 111890431 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 (111890689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40637 + ... + 43302.

It is an arithmetic number, because the mean of its divisors is an integer number (14773440).

Almost surely, 2^111890687 is an apocalyptic number.

111890687 is a deficient number, since it is larger than the sum of its proper divisors (6296833).

111890687 is an equidigital number, since it uses as much as digits as its factorization.

111890687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84013.

The product of its (nonzero) digits is 24192, while the sum is 41.

The square root of 111890687 is about 10577.8394296756. The cubic root of 111890687 is about 481.8715804298.

The spelling of 111890687 in words is "one hundred eleven million, eight hundred ninety thousand, six hundred eighty-seven".