6682559868 has 72 divisors (see below), whose sum is σ = 17155969376. Its totient is φ = 2192832000.

The previous prime is 6682559843. The next prime is 6682559887. The reversal of 6682559868 is 8689552866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1577313 + ... + 1581543.

Almost surely, 2^6682559868 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 6682559868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8577984688).

6682559868 is an abundant number, since it is smaller than the sum of its proper divisors (10473409508).

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

6682559868 is a wasteful number, since it uses less digits than its factorization.

6682559868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4915 (or 4910 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The square root of 6682559868 is about 81746.9257403604. The cubic root of 6682559868 is about 1883.5664783410.

The spelling of 6682559868 in words is "six billion, six hundred eighty-two million, five hundred fifty-nine thousand, eight hundred sixty-eight".