6668580860 has 48 divisors (see below), whose sum is σ = 14802443040. Its totient is φ = 2516520960.

The previous prime is 6668580859. The next prime is 6668580883. The reversal of 6668580860 is 680858666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55172 + ... + 127988.

It is an arithmetic number, because the mean of its divisors is an integer number (308384230).

Almost surely, 2^6668580860 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 6668580860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7401221520).

6668580860 is an abundant number, since it is smaller than the sum of its proper divisors (8133862180).

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

6668580860 is a wasteful number, since it uses less digits than its factorization.

6668580860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73086 (or 73084 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 53.

The square root of 6668580860 is about 81661.3792438017. The cubic root of 6668580860 is about 1882.2521730137.

The spelling of 6668580860 in words is "six billion, six hundred sixty-eight million, five hundred eighty thousand, eight hundred sixty".