6816682240 has 36 divisors (see below), whose sum is σ = 16328087244. Its totient is φ = 2726672384.

The previous prime is 6816682217. The next prime is 6816682259. The reversal of 6816682240 is 422866186.

It can be written as a sum of positive squares in 2 ways, for example, as 2850705664 + 3965976576 = 53392^2 + 62976^2 .

It is a super-2 number, since 2×6816682240² = 92934313522262835200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2661487 + ... + 2664046.

It is an arithmetic number, because the mean of its divisors is an integer number (453557979).

Almost surely, 2^6816682240 is an apocalyptic number.

It is an amenable number.

6816682240 is an abundant number, since it is smaller than the sum of its proper divisors (9511405004).

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

6816682240 is an equidigital number, since it uses as much as digits as its factorization.

6816682240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325554 (or 5325540 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 6816682240 is about 82563.2014883144. The cubic root of 6816682240 is about 1896.0844793730.

The spelling of 6816682240 in words is "six billion, eight hundred sixteen million, six hundred eighty-two thousand, two hundred forty".