111968611 has 6 divisors (see below), whose sum is σ = 113838036. Its totient is φ = 110129400.

The previous prime is 111968599. The next prime is 111968639. The reversal of 111968611 is 116869111.

It is not a de Polignac number, because 111968611 - 2⁹ = 111968099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111968651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11325 + ... + 18766.

It is an arithmetic number, because the mean of its divisors is an integer number (18973006).

Almost surely, 2^111968611 is an apocalyptic number.

111968611 is a deficient number, since it is larger than the sum of its proper divisors (1869425).

111968611 is an frugal number, since it uses more digits than its factorization.

111968611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30213 (or 30152 counting only the distinct ones).

The product of its digits is 2592, while the sum is 34.

The square root of 111968611 is about 10581.5221494830. The cubic root of 111968611 is about 481.9834177017.

The spelling of 111968611 in words is "one hundred eleven million, nine hundred sixty-eight thousand, six hundred eleven".