110665 has 4 divisors (see below), whose sum is σ = 132804. Its totient is φ = 88528.

The previous prime is 110651. The next prime is 110681. The reversal of 110665 is 566011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46656 + 64009 = 216^2 + 253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11062 + ... + 11071.

It is an arithmetic number, because the mean of its divisors is an integer number (33201).

2¹¹⁰⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

110665 is a deficient number, since it is larger than the sum of its proper divisors (22139).

110665 is an equidigital number, since it uses as much as digits as its factorization.

110665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22138.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 110665 is about 332.6634936388. The cubic root of 110665 is about 48.0105590197.

Adding to 110665 its reverse (566011), we get a palindrome (676676).

The spelling of 110665 in words is "one hundred ten thousand, six hundred sixty-five".