805873 has 2 divisors, whose sum is σ = 805874. Its totient is φ = 805872.

The previous prime is 805867. The next prime is 805877. The reversal of 805873 is 378508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 138384 = 817^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 805873 - 2¹³ = 797681 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (805877) by changing a digit.

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 as a sum of consecutive naturals, namely, 402936 + 402937.

It is an arithmetic number, because the mean of its divisors is an integer number (402937).

2⁸⁰⁵⁸⁷³ is an apocalyptic number.

It is an amenable number.

805873 is a deficient number, since it is larger than the sum of its proper divisors (1).

805873 is an equidigital number, since it uses as much as digits as its factorization.

805873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 805873 is about 897.7042942974. The cubic root of 805873 is about 93.0583901251.

The spelling of 805873 in words is "eight hundred five thousand, eight hundred seventy-three".