885564 has 36 divisors (see below), whose sum is σ = 2371824. Its totient is φ = 277632.

The previous prime is 885553. The next prime is 885589. The reversal of 885564 is 465588.

885564 = 3² + 4² + ... + 138².

It is a happy number.

885564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112 + ... + 1335.

It is an arithmetic number, because the mean of its divisors is an integer number (65884).

2⁸⁸⁵⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 885564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185912).

885564 is an abundant number, since it is smaller than the sum of its proper divisors (1486260).

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

885564 is a wasteful number, since it uses less digits than its factorization.

885564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 1469 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 885564 is about 941.0441009857. The cubic root of 885564 is about 96.0299385790.

The spelling of 885564 in words is "eight hundred eighty-five thousand, five hundred sixty-four".