111160665 has 72 divisors (see below), whose sum is σ = 244565568. Its totient is φ = 46186560.

The previous prime is 111160649. The next prime is 111160667. The reversal of 111160665 is 566061111.

It is not a de Polignac number, because 111160665 - 2⁴ = 111160649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111160667) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21964 + ... + 26546.

It is an arithmetic number, because the mean of its divisors is an integer number (3396744).

Almost surely, 2^111160665 is an apocalyptic number.

111160665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111160665 is an abundant number, since it is smaller than the sum of its proper divisors (133404903).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111160665 is a wasteful number, since it uses less digits than its factorization.

111160665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619 (or 4609 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 111160665 is about 10543.2758192129. The cubic root of 111160665 is about 480.8213152220.

It can be divided in two parts, 1111 and 60665, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 111160665 in words is "one hundred eleven million, one hundred sixty thousand, six hundred sixty-five".