805880 has 16 divisors (see below), whose sum is σ = 1813320. Its totient is φ = 322336.

The previous prime is 805877. The next prime is 805891. The reversal of 805880 is 88508.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805880.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10034 + ... + 10113.

2⁸⁰⁵⁸⁸⁰ is an apocalyptic number.

It is an amenable number.

805880 is an abundant number, since it is smaller than the sum of its proper divisors (1007440).

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

805880 is a wasteful number, since it uses less digits than its factorization.

805880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20158 (or 20154 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 805880 is about 897.7081931229. The cubic root of 805880 is about 93.0586595666.

The spelling of 805880 in words is "eight hundred five thousand, eight hundred eighty".