111968645 has 8 divisors (see below), whose sum is σ = 134645760. Its totient is φ = 89386000.

The previous prime is 111968639. The next prime is 111968651. The reversal of 111968645 is 546869111.

It is an interprime number because it is at equal distance from previous prime (111968639) and next prime (111968651).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-111968645 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20981 + ... + 25770.

It is an arithmetic number, because the mean of its divisors is an integer number (16830720).

Almost surely, 2^111968645 is an apocalyptic number.

It is an amenable number.

111968645 is a deficient number, since it is larger than the sum of its proper divisors (22677115).

111968645 is an equidigital number, since it uses as much as digits as its factorization.

111968645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47235.

The product of its digits is 51840, while the sum is 41.

The square root of 111968645 is about 10581.5237560571. The cubic root of 111968645 is about 481.9834664875.

The spelling of 111968645 in words is "one hundred eleven million, nine hundred sixty-eight thousand, six hundred forty-five".