1106805 has 32 divisors (see below), whose sum is σ = 2064384. Its totient is φ = 495936.

The previous prime is 1106801. The next prime is 1106821. The reversal of 1106805 is 5086011.

It is not a de Polignac number, because 1106805 - 2² = 1106801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1106805 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1106801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8652 + ... + 8778.

It is an arithmetic number, because the mean of its divisors is an integer number (64512).

2^1106805 is an apocalyptic number.

1106805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1106805 is a deficient number, since it is larger than the sum of its proper divisors (957579).

1106805 is a wasteful number, since it uses less digits than its factorization.

1106805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1106805 is about 1052.0480027071. The cubic root of 1106805 is about 103.4404427594.

It can be divided in two parts, 110680 and 5, that added together give a triangular number (110685 = T₄₇₀).

The spelling of 1106805 in words is "one million, one hundred six thousand, eight hundred five".