1105985 has 4 divisors (see below), whose sum is σ = 1327188. Its totient is φ = 884784.

The previous prime is 1105963. The next prime is 1105997. The reversal of 1105985 is 5895011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123904 + 982081 = 352^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105985 - 2¹⁶ = 1040449 is a prime.

It is a Duffinian 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, 110594 + ... + 110603.

It is an arithmetic number, because the mean of its divisors is an integer number (331797).

2^1105985 is an apocalyptic number.

It is an amenable number.

1105985 is a deficient number, since it is larger than the sum of its proper divisors (221203).

1105985 is an equidigital number, since it uses as much as digits as its factorization.

1105985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221202.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 1105985 is about 1051.6582144404. The cubic root of 1105985 is about 103.4148910983.

The spelling of 1105985 in words is "one million, one hundred five thousand, nine hundred eighty-five".