110645 has 4 divisors (see below), whose sum is σ = 132780. Its totient is φ = 88512.

The previous prime is 110641. The next prime is 110647. The reversal of 110645 is 546011.

It is a happy number.

110645 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546011 = 61 ⋅8951.

It can be written as a sum of positive squares in 2 ways, for example, as 78961 + 31684 = 281^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 110645 - 2² = 110641 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 110645.

It is not an unprimeable number, because it can be changed into a prime (110641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11060 + ... + 11069.

It is an arithmetic number, because the mean of its divisors is an integer number (33195).

2¹¹⁰⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

110645 is a deficient number, since it is larger than the sum of its proper divisors (22135).

110645 is an equidigital number, since it uses as much as digits as its factorization.

110645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22134.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 110645 is about 332.6334318736. The cubic root of 110645 is about 48.0076665995.

Adding to 110645 its reverse (546011), we get a palindrome (656656).

It can be divided in two parts, 1106 and 45, that multiplied together give a triangular number (49770 = T₃₁₅).

The spelling of 110645 in words is "one hundred ten thousand, six hundred forty-five".