111999968 has 12 divisors (see below), whose sum is σ = 220500000. Its totient is φ = 55999968.

The previous prime is 111999913. The next prime is 111999977. The reversal of 111999968 is 869999111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749968 + ... + 1750031.

It is an arithmetic number, because the mean of its divisors is an integer number (18375000).

Almost surely, 2^111999968 is an apocalyptic number.

It is an amenable number.

111999968 is a deficient number, since it is larger than the sum of its proper divisors (108500032).

111999968 is an equidigital number, since it uses as much as digits as its factorization.

111999968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500009 (or 3500001 counting only the distinct ones).

The product of its digits is 314928, while the sum is 53.

The square root of 111999968 is about 10583.0037324004. The cubic root of 111999968 is about 482.0284069276.

The spelling of 111999968 in words is "one hundred eleven million, nine hundred ninety-nine thousand, nine hundred sixty-eight".