111688973 has 16 divisors (see below), whose sum is σ = 129038400. Its totient is φ = 95604480.

The previous prime is 111688937. The next prime is 111688979. The reversal of 111688973 is 379886111.

It is a cyclic number.

It is not a de Polignac number, because 111688973 - 2¹⁰ = 111687949 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 (111688979) 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 15 ways as a sum of consecutive naturals, for example, 34613 + ... + 37701.

It is an arithmetic number, because the mean of its divisors is an integer number (8064900).

Almost surely, 2^111688973 is an apocalyptic number.

It is an amenable number.

111688973 is a deficient number, since it is larger than the sum of its proper divisors (17349427).

111688973 is a wasteful number, since it uses less digits than its factorization.

111688973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292.

The product of its digits is 72576, while the sum is 44.

The square root of 111688973 is about 10568.3003836946. The cubic root of 111688973 is about 481.5818371834.

The spelling of 111688973 in words is "one hundred eleven million, six hundred eighty-eight thousand, nine hundred seventy-three".