6688633336660 has 144 divisors (see below), whose sum is σ = 15550718823360. Its totient is φ = 2414709158400.

The previous prime is 6688633336601. The next prime is 6688633336729. The reversal of 6688633336660 is 666333368866.

It is a super-3 number, since 3×6688633336660³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6688633336592 and 6688633336601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208827567 + ... + 208859593.

It is an arithmetic number, because the mean of its divisors is an integer number (107991102940).

Almost surely, 2^{6688633336660} 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 6688633336660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7775359411680).

6688633336660 is an abundant number, since it is smaller than the sum of its proper divisors (8862085486700).

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

6688633336660 is a wasteful number, since it uses less digits than its factorization.

6688633336660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32678 (or 32665 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 64.

The spelling of 6688633336660 in words is "six trillion, six hundred eighty-eight billion, six hundred thirty-three million, three hundred thirty-six thousand, six hundred sixty".