805867001 has 2 divisors, whose sum is σ = 805867002. Its totient is φ = 805867000.

The previous prime is 805866949. The next prime is 805867019. The reversal of 805867001 is 100768508.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643941376 + 161925625 = 25376^2 + 12725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805867001 is a prime.

It is not a weakly prime, because it can be changed into another prime (805867021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402933500 + 402933501.

It is an arithmetic number, because the mean of its divisors is an integer number (402933501).

Almost surely, 2^805867001 is an apocalyptic number.

It is an amenable number.

805867001 is a deficient number, since it is larger than the sum of its proper divisors (1).

805867001 is an equidigital number, since it uses as much as digits as its factorization.

805867001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 805867001 is about 28387.7966915363. The cubic root of 805867001 is about 930.5815921253.

The spelling of 805867001 in words is "eight hundred five million, eight hundred sixty-seven thousand, one".