6689313792 has 198 divisors, whose sum is σ = 22470275178. Its totient is φ = 1911103488.

The previous prime is 6689313773. The next prime is 6689313803. The reversal of 6689313792 is 2973139866.

It can be written as a sum of positive squares in only one way, i.e., 5170185216 + 1519128576 = 71904^2 + 38976^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 444178 + ... + 458990.

Almost surely, 2^6689313792 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 6689313792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11235137589).

6689313792 is an abundant number, since it is smaller than the sum of its proper divisors (15780961386).

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

6689313792 is a wasteful number, since it uses less digits than its factorization.

6689313792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14853 (or 14825 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 6689313792 is about 81788.2252650099. The cubic root of 6689313792 is about 1884.2008251445.

The spelling of 6689313792 in words is "six billion, six hundred eighty-nine million, three hundred thirteen thousand, seven hundred ninety-two".