1105865 has 4 divisors (see below), whose sum is σ = 1327044. Its totient is φ = 884688.

The previous prime is 1105861. The next prime is 1105873. The reversal of 1105865 is 5685011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5685011 = 2179 ⋅2609.

It can be written as a sum of positive squares in 2 ways, for example, as 121801 + 984064 = 349^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105865 - 2² = 1105861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105861) 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, 110582 + ... + 110591.

It is an arithmetic number, because the mean of its divisors is an integer number (331761).

2^1105865 is an apocalyptic number.

It is an amenable number.

1105865 is a deficient number, since it is larger than the sum of its proper divisors (221179).

1105865 is an equidigital number, since it uses as much as digits as its factorization.

1105865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221178.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1105865 is about 1051.6011601363. The cubic root of 1105865 is about 103.4111507715.

The spelling of 1105865 in words is "one million, one hundred five thousand, eight hundred sixty-five".