111663812 has 12 divisors (see below), whose sum is σ = 210443436. Its totient is φ = 51537120.

The previous prime is 111663791. The next prime is 111663841. The reversal of 111663812 is 218366111.

It can be written as a sum of positive squares in 2 ways, for example, as 74891716 + 36772096 = 8654^2 + 6064^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073639 + ... + 1073742.

It is an arithmetic number, because the mean of its divisors is an integer number (17536953).

Almost surely, 2^111663812 is an apocalyptic number.

It is an amenable number.

111663812 is a deficient number, since it is larger than the sum of its proper divisors (98779624).

111663812 is a wasteful number, since it uses less digits than its factorization.

111663812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147398 (or 2147396 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 111663812 is about 10567.1099170965. The cubic root of 111663812 is about 481.5456713015.

The spelling of 111663812 in words is "one hundred eleven million, six hundred sixty-three thousand, eight hundred twelve".