111668973 has 16 divisors (see below), whose sum is σ = 161770560. Its totient is φ = 68108544.

The previous prime is 111668969. The next prime is 111668981. The reversal of 111668973 is 379866111.

It is not a de Polignac number, because 111668973 - 2² = 111668969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111660973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8263 + ... + 17076.

It is an arithmetic number, because the mean of its divisors is an integer number (10110660).

Almost surely, 2^111668973 is an apocalyptic number.

111668973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111668973 is a deficient number, since it is larger than the sum of its proper divisors (50101587).

111668973 is a wasteful number, since it uses less digits than its factorization.

111668973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25468.

The product of its digits is 54432, while the sum is 42.

The square root of 111668973 is about 10567.3541153876. The cubic root of 111668973 is about 481.5530900551.

The spelling of 111668973 in words is "one hundred eleven million, six hundred sixty-eight thousand, nine hundred seventy-three".