111666745 has 8 divisors (see below), whose sum is σ = 134057160. Its totient is φ = 89295360.

The previous prime is 111666701. The next prime is 111666767. The reversal of 111666745 is 547666111.

It can be written as a sum of positive squares in 4 ways, for example, as 23532201 + 88134544 = 4851^2 + 9388^2 .

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

It is not a de Polignac number, because 111666745 - 2²⁵ = 78112313 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, 18505 + ... + 23785.

It is an arithmetic number, because the mean of its divisors is an integer number (16757145).

Almost surely, 2^111666745 is an apocalyptic number.

It is an amenable number.

111666745 is a deficient number, since it is larger than the sum of its proper divisors (22390415).

111666745 is an equidigital number, since it uses as much as digits as its factorization.

111666745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515.

The product of its digits is 30240, while the sum is 37.

The square root of 111666745 is about 10567.2486958527. The cubic root of 111666745 is about 481.5498874125.

The spelling of 111666745 in words is "one hundred eleven million, six hundred sixty-six thousand, seven hundred forty-five".