850868017 has 2 divisors, whose sum is σ = 850868018. Its totient is φ = 850868016.

The previous prime is 850868009. The next prime is 850868059. The reversal of 850868017 is 710868058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 814759936 + 36108081 = 28544^2 + 6009^2 .

It is a cyclic number.

It is not a de Polignac number, because 850868017 - 2³ = 850868009 is a prime.

It is not a weakly prime, because it can be changed into another prime (850868617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425434008 + 425434009.

It is an arithmetic number, because the mean of its divisors is an integer number (425434009).

Almost surely, 2^850868017 is an apocalyptic number.

It is an amenable number.

850868017 is a deficient number, since it is larger than the sum of its proper divisors (1).

850868017 is an equidigital number, since it uses as much as digits as its factorization.

850868017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 850868017 is about 29169.6420444269. The cubic root of 850868017 is about 947.5905764804.

The spelling of 850868017 in words is "eight hundred fifty million, eight hundred sixty-eight thousand, seventeen".