850805 has 8 divisors (see below), whose sum is σ = 1026432. Its totient is φ = 677008.

The previous prime is 850781. The next prime is 850807. The reversal of 850805 is 508058.

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

It is a cyclic number.

It is not a de Polignac number, because 850805 - 2¹⁶ = 785269 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (128304).

2⁸⁵⁰⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

850805 is a deficient number, since it is larger than the sum of its proper divisors (175627).

850805 is a wasteful number, since it uses less digits than its factorization.

850805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 850805 is about 922.3909149596. The cubic root of 850805 is about 94.7567182414.

The spelling of 850805 in words is "eight hundred fifty thousand, eight hundred five".