804205 has 4 divisors (see below), whose sum is σ = 965052. Its totient is φ = 643360.

The previous prime is 804203. The next prime is 804211. The reversal of 804205 is 502408.

It is a happy number.

804205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 594441 + 209764 = 771^2 + 458^2 .

It is not a de Polignac number, because 804205 - 2¹ = 804203 is a prime.

It is a super-3 number, since 3×804205³ = 1560348333638745375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804203) 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, 80416 + ... + 80425.

It is an arithmetic number, because the mean of its divisors is an integer number (241263).

2⁸⁰⁴²⁰⁵ is an apocalyptic number.

It is an amenable number.

804205 is a deficient number, since it is larger than the sum of its proper divisors (160847).

804205 is a wasteful number, since it uses less digits than its factorization.

804205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160846.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 804205 is about 896.7747766301. The cubic root of 804205 is about 92.9941415356.

It can be divided in two parts, 80 and 4205, that multiplied together give a square (336400 = 580²).

The spelling of 804205 in words is "eight hundred four thousand, two hundred five".