6688082140 has 96 divisors (see below), whose sum is σ = 15181737984. Its totient is φ = 2468632320.

The previous prime is 6688082129. The next prime is 6688082207. The reversal of 6688082140 is 412808866.

It is a super-2 number, since 2×6688082140² = 89460885422773959200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1532842 + ... + 1537198.

It is an arithmetic number, because the mean of its divisors is an integer number (158143104).

Almost surely, 2^6688082140 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 6688082140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7590868992).

6688082140 is an abundant number, since it is smaller than the sum of its proper divisors (8493655844).

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

6688082140 is a wasteful number, since it uses less digits than its factorization.

6688082140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507 (or 4505 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 6688082140 is about 81780.6953993423. The cubic root of 6688082140 is about 1884.0851769016.

It can be divided in two parts, 668 and 8082140, that added together give a palindrome (8082808).

The spelling of 6688082140 in words is "six billion, six hundred eighty-eight million, eighty-two thousand, one hundred forty".