806821168 has 40 divisors (see below), whose sum is σ = 1662515120. Its totient is φ = 378224640.

The previous prime is 806821157. The next prime is 806821181. The reversal of 806821168 is 861128608.

It is a self number, because there is not a number n which added to its sum of digits gives 806821168.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15808 + ... + 43168.

It is an arithmetic number, because the mean of its divisors is an integer number (41562878).

Almost surely, 2^806821168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 806821168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831257560).

806821168 is an abundant number, since it is smaller than the sum of its proper divisors (855693952).

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

806821168 is a wasteful number, since it uses less digits than its factorization.

806821168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27485 (or 27479 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 806821168 is about 28404.5976560134. The cubic root of 806821168 is about 930.9487246799.

The spelling of 806821168 in words is "eight hundred six million, eight hundred twenty-one thousand, one hundred sixty-eight".