1109065 has 4 divisors (see below), whose sum is σ = 1330884. Its totient is φ = 887248.

The previous prime is 1109057. The next prime is 1109113. The reversal of 1109065 is 5609011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5609011 = 61 ⋅91951.

It can be written as a sum of positive squares in 2 ways, for example, as 383161 + 725904 = 619^2 + 852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109065 - 2³ = 1109057 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110902 + ... + 110911.

It is an arithmetic number, because the mean of its divisors is an integer number (332721).

2^1109065 is an apocalyptic number.

It is an amenable number.

1109065 is a deficient number, since it is larger than the sum of its proper divisors (221819).

1109065 is an equidigital number, since it uses as much as digits as its factorization.

1109065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221818.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1109065 is about 1053.1215504395. The cubic root of 1109065 is about 103.5108003697.

The spelling of 1109065 in words is "one million, one hundred nine thousand, sixty-five".