111886643 has 6 divisors (see below), whose sum is σ = 122982972. Its totient is φ = 101715020.

The previous prime is 111886609. The next prime is 111886661. The reversal of 111886643 is 346688111.

It is a de Polignac number, because none of the positive numbers 2^k-111886643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111886597 and 111886606.

It is not an unprimeable number, because it can be changed into a prime (111886693) 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 5 ways as a sum of consecutive naturals, for example, 462221 + ... + 462462.

It is an arithmetic number, because the mean of its divisors is an integer number (20497162).

Almost surely, 2^111886643 is an apocalyptic number.

111886643 is a deficient number, since it is larger than the sum of its proper divisors (11096329).

111886643 is an equidigital number, since it uses as much as digits as its factorization.

111886643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924705 (or 924694 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 111886643 is about 10577.6482736003. The cubic root of 111886643 is about 481.8657750251.

The spelling of 111886643 in words is "one hundred eleven million, eight hundred eighty-six thousand, six hundred forty-three".