805867 has 2 divisors, whose sum is σ = 805868. Its totient is φ = 805866.

The previous prime is 805859. The next prime is 805873. The reversal of 805867 is 768508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805867 - 2³ = 805859 is a prime.

805867 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (805807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402933 + 402934.

It is an arithmetic number, because the mean of its divisors is an integer number (402934).

2⁸⁰⁵⁸⁶⁷ is an apocalyptic number.

805867 is a deficient number, since it is larger than the sum of its proper divisors (1).

805867 is an equidigital number, since it uses as much as digits as its factorization.

805867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 805867 is about 897.7009524335. The cubic root of 805867 is about 93.0581591740.

The spelling of 805867 in words is "eight hundred five thousand, eight hundred sixty-seven".