866874 has 8 divisors (see below), whose sum is σ = 1733760. Its totient is φ = 288956.

The previous prime is 866869. The next prime is 866909. The reversal of 866874 is 478668.

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

866874 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 866874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72234 + ... + 72245.

It is an arithmetic number, because the mean of its divisors is an integer number (216720).

2⁸⁶⁶⁸⁷⁴ is an apocalyptic number.

866874 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.

866874 is a wasteful number, since it uses less digits than its factorization.

866874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144484.

The product of its digits is 64512, while the sum is 39.

The square root of 866874 is about 931.0606854550. The cubic root of 866874 is about 95.3495525026.

The spelling of 866874 in words is "eight hundred sixty-six thousand, eight hundred seventy-four".