1080785 has 4 divisors (see below), whose sum is σ = 1296948. Its totient is φ = 864624.

The previous prime is 1080773. The next prime is 1080787. The reversal of 1080785 is 5870801.

It is a happy number.

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 712336 + 368449 = 844^2 + 607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1080785 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080787) 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 3 ways as a sum of consecutive naturals, for example, 108074 + ... + 108083.

It is an arithmetic number, because the mean of its divisors is an integer number (324237).

2^1080785 is an apocalyptic number.

It is an amenable number.

1080785 is a deficient number, since it is larger than the sum of its proper divisors (216163).

1080785 is an equidigital number, since it uses as much as digits as its factorization.

1080785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216162.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 1080785 is about 1039.6080992374. The cubic root of 1080785 is about 102.6234087640.

The spelling of 1080785 in words is "one million, eighty thousand, seven hundred eighty-five".