804505 has 8 divisors (see below), whose sum is σ = 1039752. Its totient is φ = 594048.

The previous prime is 804497. The next prime is 804511. The reversal of 804505 is 505408.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7056 + 797449 = 84^2 + 893^2 .

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

It is not a de Polignac number, because 804505 - 2³ = 804497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6124 + ... + 6253.

It is an arithmetic number, because the mean of its divisors is an integer number (129969).

2⁸⁰⁴⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

804505 is a deficient number, since it is larger than the sum of its proper divisors (235247).

804505 is a wasteful number, since it uses less digits than its factorization.

804505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12395.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 804505 is about 896.9420271121. The cubic root of 804505 is about 93.0057035851.

The spelling of 804505 in words is "eight hundred four thousand, five hundred five".