850806 has 24 divisors (see below), whose sum is σ = 2011464. Its totient is φ = 257760.

The previous prime is 850781. The next prime is 850807. The reversal of 850806 is 608058.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 850806.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 850806.

It is not an unprimeable number, because it can be changed into a prime (850807) by changing a digit.

850806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1951 + ... + 2346.

It is an arithmetic number, because the mean of its divisors is an integer number (83811).

2⁸⁵⁰⁸⁰⁶ is an apocalyptic number.

850806 is an abundant number, since it is smaller than the sum of its proper divisors (1160658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

850806 is a wasteful number, since it uses less digits than its factorization.

850806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4316 (or 4313 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 850806 is about 922.3914570290. The cubic root of 850806 is about 94.7567553657.

The spelling of 850806 in words is "eight hundred fifty thousand, eight hundred six".