6613663336 has 128 divisors (see below), whose sum is σ = 15202944000. Its totient is φ = 2634508800.

The previous prime is 6613663333. The next prime is 6613663361. The reversal of 6613663336 is 6333663166.

It is a junction number, because it is equal to n+sod(n) for n = 6613663292 and 6613663301.

It is not an unprimeable number, because it can be changed into a prime (6613663333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19980691 + ... + 19981021.

It is an arithmetic number, because the mean of its divisors is an integer number (118773000).

Almost surely, 2^6613663336 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 6613663336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7601472000).

6613663336 is an abundant number, since it is smaller than the sum of its proper divisors (8589280664).

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

6613663336 is a wasteful number, since it uses less digits than its factorization.

6613663336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 659 counting only the distinct ones).

The product of its digits is 629856, while the sum is 43.

The square root of 6613663336 is about 81324.4325894746. The cubic root of 6613663336 is about 1877.0709761723.

The spelling of 6613663336 in words is "six billion, six hundred thirteen million, six hundred sixty-three thousand, three hundred thirty-six".