6660872712 has 288 divisors, whose sum is σ = 21034166400. Its totient is φ = 1897219584.

The previous prime is 6660872707. The next prime is 6660872723. The reversal of 6660872712 is 2172780666.

It is a super-3 number, since 3×6660872712³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10865718 + ... + 10866330.

It is an arithmetic number, because the mean of its divisors is an integer number (73035300).

Almost surely, 2^6660872712 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 6660872712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10517083200).

6660872712 is an abundant number, since it is smaller than the sum of its proper divisors (14373293688).

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

6660872712 is a wasteful number, since it uses less digits than its factorization.

6660872712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 6660872712 is about 81614.1697991225. The cubic root of 6660872712 is about 1881.5266677242.

The spelling of 6660872712 in words is "six billion, six hundred sixty million, eight hundred seventy-two thousand, seven hundred twelve".