850166 has 4 divisors (see below), whose sum is σ = 1275252. Its totient is φ = 425082.

The previous prime is 850147. The next prime is 850177. The reversal of 850166 is 661058.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

850166 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 212540 + ... + 212543.

It is an arithmetic number, because the mean of its divisors is an integer number (318813).

2⁸⁵⁰¹⁶⁶ is an apocalyptic number.

850166 is a deficient number, since it is larger than the sum of its proper divisors (425086).

850166 is a wasteful number, since it uses less digits than its factorization.

850166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425085.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 850166 is about 922.0444674743. The cubic root of 850166 is about 94.7329898477.

The spelling of 850166 in words is "eight hundred fifty thousand, one hundred sixty-six".