804560 has 40 divisors (see below), whose sum is σ = 1908360. Its totient is φ = 315392.

The previous prime is 804553. The next prime is 804571. The reversal of 804560 is 65408.

804560 = T₃₂₀ + T₃₂₁ + ... + T₃₃₄.

It can be written as a sum of positive squares in 4 ways, for example, as 23104 + 781456 = 152^2 + 884^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

804560 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7064 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (47709).

2⁸⁰⁴⁵⁶⁰ is an apocalyptic number.

804560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954180).

804560 is an abundant number, since it is smaller than the sum of its proper divisors (1103800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

804560 is a wasteful number, since it uses less digits than its factorization.

804560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 804560 is about 896.9726863177. The cubic root of 804560 is about 93.0078229824.

Adding to 804560 its reverse (65408), we get a palindrome (869968).

The spelling of 804560 in words is "eight hundred four thousand, five hundred sixty".