866706 has 8 divisors (see below), whose sum is σ = 1733424. Its totient is φ = 288900.

The previous prime is 866693. The next prime is 866707. The reversal of 866706 is 607668.

866706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

866706 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 866706.

It is not an unprimeable number, because it can be changed into a prime (866707) by changing a digit.

866706 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72220 + ... + 72231.

It is an arithmetic number, because the mean of its divisors is an integer number (216678).

2⁸⁶⁶⁷⁰⁶ is an apocalyptic number.

866706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

866706 is a wasteful number, since it uses less digits than its factorization.

866706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144456.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 866706 is about 930.9704614004. The cubic root of 866706 is about 95.3433925302.

The spelling of 866706 in words is "eight hundred sixty-six thousand, seven hundred six".