866704 has 20 divisors (see below), whose sum is σ = 1768240. Its totient is φ = 410400.

The previous prime is 866693. The next prime is 866707. The reversal of 866704 is 407668.

It is a zygodrome in base 3.

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

866704 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, 1122 + ... + 1729.

It is an arithmetic number, because the mean of its divisors is an integer number (88412).

2⁸⁶⁶⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

866704 is an abundant number, since it is smaller than the sum of its proper divisors (901536).

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

866704 is a wasteful number, since it uses less digits than its factorization.

866704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878 (or 2872 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 866704 is about 930.9693872518. The cubic root of 866704 is about 95.3433191924.

The spelling of 866704 in words is "eight hundred sixty-six thousand, seven hundred four".