6660108684 has 240 divisors, whose sum is σ = 18935532000. Its totient is φ = 2034699264.

The previous prime is 6660108677. The next prime is 6660108713. The reversal of 6660108684 is 4868010666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 44698642 + ... + 44698790.

It is an arithmetic number, because the mean of its divisors is an integer number (78898050).

Almost surely, 2^6660108684 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 6660108684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9467766000).

6660108684 is an abundant number, since it is smaller than the sum of its proper divisors (12275423316).

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

6660108684 is a wasteful number, since it uses less digits than its factorization.

6660108684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 6660108684 is about 81609.4889335793. The cubic root of 6660108684 is about 1881.4547254985.

The spelling of 6660108684 in words is "six billion, six hundred sixty million, one hundred eight thousand, six hundred eighty-four".