805775 has 12 divisors (see below), whose sum is σ = 1010352. Its totient is φ = 637440.

The previous prime is 805757. The next prime is 805789. The reversal of 805775 is 577508.

It is not a de Polignac number, because 805775 - 2⁶ = 805711 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 4079 + ... + 4271.

It is an arithmetic number, because the mean of its divisors is an integer number (84196).

2⁸⁰⁵⁷⁷⁵ is an apocalyptic number.

805775 is a deficient number, since it is larger than the sum of its proper divisors (204577).

805775 is a wasteful number, since it uses less digits than its factorization.

805775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 805775 is about 897.6497089622. The cubic root of 805775 is about 93.0546177805.

The spelling of 805775 in words is "eight hundred five thousand, seven hundred seventy-five".