866946 has 32 divisors (see below), whose sum is σ = 1843200. Its totient is φ = 271440.

The previous prime is 866941. The next prime is 866953. The reversal of 866946 is 649668.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10935 + ... + 11013.

It is an arithmetic number, because the mean of its divisors is an integer number (57600).

2⁸⁶⁶⁹⁴⁶ is an apocalyptic number.

866946 is an abundant number, since it is smaller than the sum of its proper divisors (976254).

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

866946 is a wasteful number, since it uses less digits than its factorization.

866946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174.

The product of its digits is 62208, while the sum is 39.

The square root of 866946 is about 931.0993502307. The cubic root of 866946 is about 95.3521922471.

The spelling of 866946 in words is "eight hundred sixty-six thousand, nine hundred forty-six".