805530 has 32 divisors (see below), whose sum is σ = 2109888. Its totient is φ = 195200.

The previous prime is 805523. The next prime is 805531. The reversal of 805530 is 35508.

It is a junction number, because it is equal to n+sod(n) for n = 805497 and 805506.

It is not an unprimeable number, because it can be changed into a prime (805531) by changing a digit.

805530 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 15 ways as a sum of consecutive naturals, for example, 891 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (65934).

2⁸⁰⁵⁵³⁰ is an apocalyptic number.

805530 is an abundant number, since it is smaller than the sum of its proper divisors (1304358).

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

805530 is a wasteful number, since it uses less digits than its factorization.

805530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 805530 is about 897.5132311002. The cubic root of 805530 is about 93.0451855807.

The spelling of 805530 in words is "eight hundred five thousand, five hundred thirty".