866834 has 8 divisors (see below), whose sum is σ = 1308720. Its totient is φ = 430596.

The previous prime is 866819. The next prime is 866843. The reversal of 866834 is 438668.

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

It is a junction number, because it is equal to n+sod(n) for n = 866794 and 866803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (163590).

2⁸⁶⁶⁸³⁴ is an apocalyptic number.

866834 is a deficient number, since it is larger than the sum of its proper divisors (441886).

866834 is a wasteful number, since it uses less digits than its factorization.

866834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824.

The product of its digits is 27648, while the sum is 35.

The square root of 866834 is about 931.0392043303. The cubic root of 866834 is about 95.3480859147.

The spelling of 866834 in words is "eight hundred sixty-six thousand, eight hundred thirty-four".