1085885 has 8 divisors (see below), whose sum is σ = 1335096. Its totient is φ = 847360.

The previous prime is 1085881. The next prime is 1085891. The reversal of 1085885 is 5885801.

It can be written as a sum of positive squares in 4 ways, for example, as 47524 + 1038361 = 218^2 + 1019^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1085885 - 2² = 1085881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2444 + ... + 2853.

It is an arithmetic number, because the mean of its divisors is an integer number (166887).

2^1085885 is an apocalyptic number.

It is an amenable number.

1085885 is a deficient number, since it is larger than the sum of its proper divisors (249211).

1085885 is an equidigital number, since it uses as much as digits as its factorization.

1085885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343.

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 1085885 is about 1042.0580598028. The cubic root of 1085885 is about 102.7845750449.

The spelling of 1085885 in words is "one million, eighty-five thousand, eight hundred eighty-five".