805589 has 2 divisors, whose sum is σ = 805590. Its totient is φ = 805588.

The previous prime is 805583. The next prime is 805633. The reversal of 805589 is 985508.

805589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550564 + 255025 = 742^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 805589 - 2⁴ = 805573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402794 + 402795.

It is an arithmetic number, because the mean of its divisors is an integer number (402795).

2⁸⁰⁵⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

805589 is a deficient number, since it is larger than the sum of its proper divisors (1).

805589 is an equidigital number, since it uses as much as digits as its factorization.

805589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 805589 is about 897.5460990946. The cubic root of 805589 is about 93.0474571832.

The spelling of 805589 in words is "eight hundred five thousand, five hundred eighty-nine".