6681187760 has 80 divisors (see below), whose sum is σ = 16958018784. Its totient is φ = 2433079296.

The previous prime is 6681187741. The next prime is 6681187787. The reversal of 6681187760 is 677811866.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 6681187699 and 6681187708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31919 + ... + 119921.

Almost surely, 2^6681187760 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 6681187760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8479009392).

6681187760 is an abundant number, since it is smaller than the sum of its proper divisors (10276831024).

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

6681187760 is a wasteful number, since it uses less digits than its factorization.

6681187760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88102 (or 88096 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 6681187760 is about 81738.5328960583. The cubic root of 6681187760 is about 1883.4375540170.

The spelling of 6681187760 in words is "six billion, six hundred eighty-one million, one hundred eighty-seven thousand, seven hundred sixty".