111006665 has 32 divisors (see below), whose sum is σ = 166738176. Its totient is φ = 68924160.

The previous prime is 111006619. The next prime is 111006673. The reversal of 111006665 is 566600111.

It is not a de Polignac number, because 111006665 - 2⁸ = 111006409 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143219 + ... + 143991.

It is an arithmetic number, because the mean of its divisors is an integer number (5210568).

Almost surely, 2^111006665 is an apocalyptic number.

It is an amenable number.

111006665 is a deficient number, since it is larger than the sum of its proper divisors (55731511).

111006665 is a wasteful number, since it uses less digits than its factorization.

111006665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 111006665 is about 10535.9700550068. The cubic root of 111006665 is about 480.5991721851.

Adding to 111006665 its reverse (566600111), we get a palindrome (677606776).

The spelling of 111006665 in words is "one hundred eleven million, six thousand, six hundred sixty-five".