804578 has 8 divisors (see below), whose sum is σ = 1211868. Its totient is φ = 400624.

The previous prime is 804577. The next prime is 804581. The reversal of 804578 is 875408.

It can be written as a sum of positive squares in 2 ways, for example, as 537289 + 267289 = 733^2 + 517^2 .

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

It is not an unprimeable number, because it can be changed into a prime (804571) 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, 101 + ... + 1272.

2⁸⁰⁴⁵⁷⁸ is an apocalyptic number.

804578 is a deficient number, since it is larger than the sum of its proper divisors (407290).

804578 is a wasteful number, since it uses less digits than its factorization.

804578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 804578 is about 896.9827200119. The cubic root of 804578 is about 93.0085165824.

Subtracting from 804578 its sum of digits (32), we obtain a triangular number (804546 = T₁₂₆₈).

The spelling of 804578 in words is "eight hundred four thousand, five hundred seventy-eight".