6800821056 has 84 divisors (see below), whose sum is σ = 20340901152. Its totient is φ = 2168373504.

The previous prime is 6800821037. The next prime is 6800821061. The reversal of 6800821056 is 6501280086.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6800821056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243426 + ... + 269921.

Almost surely, 2^6800821056 is an apocalyptic number.

It is an amenable number.

6800821056 is an abundant number, since it is smaller than the sum of its proper divisors (13540080096).

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

6800821056 is a wasteful number, since it uses less digits than its factorization.

6800821056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513388 (or 513375 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 6800821056 is about 82467.0907453391. The cubic root of 6800821056 is about 1894.6127223099.

The spelling of 6800821056 in words is "six billion, eight hundred million, eight hundred twenty-one thousand, fifty-six".