864806 has 8 divisors (see below), whose sum is σ = 1309440. Its totient is φ = 428328.

The previous prime is 864803. The next prime is 864811. The reversal of 864806 is 608468.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864806.

It is not an unprimeable number, because it can be changed into a prime (864803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (163680).

2⁸⁶⁴⁸⁰⁶ is an apocalyptic number.

864806 is a deficient number, since it is larger than the sum of its proper divisors (444634).

864806 is a wasteful number, since it uses less digits than its factorization.

864806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 864806 is about 929.9494609924. The cubic root of 864806 is about 95.2736707015.

The spelling of 864806 in words is "eight hundred sixty-four thousand, eight hundred six".