850800 has 60 divisors (see below), whose sum is σ = 2729240. Its totient is φ = 226560.

The previous prime is 850781. The next prime is 850807. The reversal of 850800 is 8058.

It is a tau number, because it is divible by the number of its divisors (60).

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 11 ways as a sum of consecutive naturals, for example, 846 + ... + 1554.

2⁸⁵⁰⁸⁰⁰ is an apocalyptic number.

850800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 850800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1364620).

850800 is an abundant number, since it is smaller than the sum of its proper divisors (1878440).

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

850800 is a wasteful number, since it uses less digits than its factorization.

850800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 850800 is about 922.3882046080. The cubic root of 850800 is about 94.7565326193.

Adding to 850800 its reverse (8058), we get a palindrome (858858).

The spelling of 850800 in words is "eight hundred fifty thousand, eight hundred".