850165 has 8 divisors (see below), whose sum is σ = 1026648. Its totient is φ = 675840.

The previous prime is 850147. The next prime is 850177. The reversal of 850165 is 561058.

It can be written as a sum of positive squares in 4 ways, for example, as 81 + 850084 = 9^2 + 922^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 850165 - 2⁵ = 850133 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

850165 is a modest number, since divided by 165 gives 85 as remainder.

850165 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 525 + ... + 1405.

It is an arithmetic number, because the mean of its divisors is an integer number (128331).

2⁸⁵⁰¹⁶⁵ is an apocalyptic number.

It is an amenable number.

850165 is a deficient number, since it is larger than the sum of its proper divisors (176483).

850165 is a wasteful number, since it uses less digits than its factorization.

850165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 850165 is about 922.0439252010. The cubic root of 850165 is about 94.7329527047.

The spelling of 850165 in words is "eight hundred fifty thousand, one hundred sixty-five".