821848806 has 48 divisors (see below), whose sum is σ = 1845979200. Its totient is φ = 263942784.

The previous prime is 821848787. The next prime is 821848823. The reversal of 821848806 is 608848128.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295635 + ... + 298401.

It is an arithmetic number, because the mean of its divisors is an integer number (38457900).

Almost surely, 2^821848806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 821848806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922989600).

821848806 is an abundant number, since it is smaller than the sum of its proper divisors (1024130394).

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

821848806 is a wasteful number, since it uses less digits than its factorization.

821848806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373 (or 3370 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 821848806 is about 28667.9055042394. The cubic root of 821848806 is about 936.6930750495.

The spelling of 821848806 in words is "eight hundred twenty-one million, eight hundred forty-eight thousand, eight hundred six".