885690 has 48 divisors (see below), whose sum is σ = 2483208. Its totient is φ = 217728.

The previous prime is 885679. The next prime is 885713. The reversal of 885690 is 96588.

It can be written as a sum of positive squares in 4 ways, for example, as 603729 + 281961 = 777^2 + 531^2 .

It is a super-2 number, since 2×885690² = 1568893552200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 792 + ... + 1548.

2⁸⁸⁵⁶⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 885690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1241604).

885690 is an abundant number, since it is smaller than the sum of its proper divisors (1597518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

885690 is a wasteful number, since it uses less digits than its factorization.

885690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 885690 is about 941.1110455201. Note that the first 3 decimals coincide. The cubic root of 885690 is about 96.0344928136.

It can be divided in two parts, 88 and 5690, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 885690 in words is "eight hundred eighty-five thousand, six hundred ninety".