822785680806 has 16 divisors (see below), whose sum is σ = 1650286470000. Its totient is φ = 273476042208.

The previous prime is 822785680751. The next prime is 822785680807. The reversal of 822785680806 is 608086587228.

It is a self number, because there is not a number n which added to its sum of digits gives 822785680806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822785680807) 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, 196460581 + ... + 196464768.

It is an arithmetic number, because the mean of its divisors is an integer number (103142904375).

Almost surely, 2^822785680806 is an apocalyptic number.

822785680806 is an abundant number, since it is smaller than the sum of its proper divisors (827500789194).

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

822785680806 is a wasteful number, since it uses less digits than its factorization.

822785680806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392925703.

The product of its (nonzero) digits is 20643840, while the sum is 60.

The spelling of 822785680806 in words is "eight hundred twenty-two billion, seven hundred eighty-five million, six hundred eighty thousand, eight hundred six".