805500 has 72 divisors (see below), whose sum is σ = 2555280. Its totient is φ = 213600.

The previous prime is 805499. The next prime is 805501. The reversal of 805500 is 5508.

805500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (805499) and next prime (805501).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4411 + ... + 4589.

It is an arithmetic number, because the mean of its divisors is an integer number (35490).

2⁸⁰⁵⁵⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277640).

805500 is an abundant number, since it is smaller than the sum of its proper divisors (1749780).

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

805500 is a wasteful number, since it uses less digits than its factorization.

805500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 805500 is about 897.4965180991. The cubic root of 805500 is about 93.0440304861.

The spelling of 805500 in words is "eight hundred five thousand, five hundred".