850136217 has 16 divisors (see below), whose sum is σ = 1295978880. Its totient is φ = 485592192.

The previous prime is 850136213. The next prime is 850136233. The reversal of 850136217 is 712631058.

It is not a de Polignac number, because 850136217 - 2² = 850136213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (850136213) 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 in 15 ways as a sum of consecutive naturals, for example, 55159 + ... + 68867.

It is an arithmetic number, because the mean of its divisors is an integer number (80998680).

Almost surely, 2^850136217 is an apocalyptic number.

It is an amenable number.

850136217 is a deficient number, since it is larger than the sum of its proper divisors (445842663).

850136217 is a wasteful number, since it uses less digits than its factorization.

850136217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16672.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 850136217 is about 29157.0954829180. The cubic root of 850136217 is about 947.3188360664.

The spelling of 850136217 in words is "eight hundred fifty million, one hundred thirty-six thousand, two hundred seventeen".