804855 has 8 divisors (see below), whose sum is σ = 1287792. Its totient is φ = 429248.

The previous prime is 804847. The next prime is 804857. The reversal of 804855 is 558408.

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

It is a cyclic number.

It is not a de Polignac number, because 804855 - 2³ = 804847 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26814 + ... + 26843.

It is an arithmetic number, because the mean of its divisors is an integer number (160974).

2⁸⁰⁴⁸⁵⁵ is an apocalyptic number.

804855 is a deficient number, since it is larger than the sum of its proper divisors (482937).

804855 is a wasteful number, since it uses less digits than its factorization.

804855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53665.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 804855 is about 897.1371132664. The cubic root of 804855 is about 93.0191890107.

The spelling of 804855 in words is "eight hundred four thousand, eight hundred fifty-five".