6681398360 has 256 divisors, whose sum is σ = 19203609600. Its totient is φ = 2036017152.

The previous prime is 6681398341. The next prime is 6681398387. The reversal of 6681398360 is 638931866.

It is a junction number, because it is equal to n+sod(n) for n = 6681398299 and 6681398308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11381987 + ... + 11382573.

It is an arithmetic number, because the mean of its divisors is an integer number (75014100).

Almost surely, 2^6681398360 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 6681398360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9601804800).

6681398360 is an abundant number, since it is smaller than the sum of its proper divisors (12522211240).

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

6681398360 is a wasteful number, since it uses less digits than its factorization.

6681398360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 6681398360 is about 81739.8211400049. The cubic root of 6681398360 is about 1883.4573433018.

The spelling of 6681398360 in words is "six billion, six hundred eighty-one million, three hundred ninety-eight thousand, three hundred sixty".