885805 has 16 divisors (see below), whose sum is σ = 1134000. Its totient is φ = 663040.

The previous prime is 885803. The next prime is 885811. The reversal of 885805 is 508588.

It can be written as a sum of positive squares in 8 ways, for example, as 249001 + 636804 = 499^2 + 798^2 .

It is not a de Polignac number, because 885805 - 2¹ = 885803 is a prime.

885805 is a lucky number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885803) 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, 5871 + ... + 6019.

It is an arithmetic number, because the mean of its divisors is an integer number (70875).

2⁸⁸⁵⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

885805 is a deficient number, since it is larger than the sum of its proper divisors (248195).

885805 is a wasteful number, since it uses less digits than its factorization.

885805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 885805 is about 941.1721415342. The cubic root of 885805 is about 96.0386490792.

The spelling of 885805 in words is "eight hundred eighty-five thousand, eight hundred five".