111456985 has 8 divisors (see below), whose sum is σ = 134932680. Its totient is φ = 88376064.

The previous prime is 111456971. The next prime is 111457001. The reversal of 111456985 is 589654111.

It can be written as a sum of positive squares in 4 ways, for example, as 3463321 + 107993664 = 1861^2 + 10392^2 .

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 111456985 - 2⁵ = 111456953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98070 + ... + 99199.

It is an arithmetic number, because the mean of its divisors is an integer number (16866585).

Almost surely, 2^111456985 is an apocalyptic number.

It is an amenable number.

111456985 is a deficient number, since it is larger than the sum of its proper divisors (23475695).

111456985 is a wasteful number, since it uses less digits than its factorization.

111456985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197387.

The product of its digits is 43200, while the sum is 40.

The square root of 111456985 is about 10557.3190252071. The cubic root of 111456985 is about 481.2481765265.

The spelling of 111456985 in words is "one hundred eleven million, four hundred fifty-six thousand, nine hundred eighty-five".