866088 has 48 divisors (see below), whose sum is σ = 2452320. Its totient is φ = 275616.

The previous prime is 866087. The next prime is 866093. The reversal of 866088 is 880668.

866088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (866081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1395 + ... + 1917.

It is an arithmetic number, because the mean of its divisors is an integer number (51090).

2⁸⁶⁶⁰⁸⁸ 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 866088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1226160).

866088 is an abundant number, since it is smaller than the sum of its proper divisors (1586232).

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

866088 is a wasteful number, since it uses less digits than its factorization.

866088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 866088 is about 930.6384904999. The cubic root of 866088 is about 95.3207257794.

The spelling of 866088 in words is "eight hundred sixty-six thousand, eighty-eight".