1105665 has 16 divisors (see below), whose sum is σ = 1930176. Its totient is φ = 536000.

The previous prime is 1105661. The next prime is 1105669. The reversal of 1105665 is 5665011.

It is an interprime number because it is at equal distance from previous prime (1105661) and next prime (1105669).

It is not a de Polignac number, because 1105665 - 2² = 1105661 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1105661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3186 + ... + 3515.

It is an arithmetic number, because the mean of its divisors is an integer number (120636).

2^1105665 is an apocalyptic number.

1105665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1105665 is a deficient number, since it is larger than the sum of its proper divisors (824511).

1105665 is a wasteful number, since it uses less digits than its factorization.

1105665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1105665 is about 1051.5060627500. The cubic root of 1105665 is about 103.4049162923.

It can be divided in two parts, 1105 and 665, that added together give a triangular number (1770 = T₅₉).

The spelling of 1105665 in words is "one million, one hundred five thousand, six hundred sixty-five".