6663328 has 48 divisors (see below), whose sum is σ = 15168384. Its totient is φ = 2822400.

The previous prime is 6663317. The next prime is 6663329. The reversal of 6663328 is 8233666.

It is a junction number, because it is equal to n+sod(n) for n = 6663293 and 6663302.

It is not an unprimeable number, because it can be changed into a prime (6663329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33726 + ... + 33922.

It is an arithmetic number, because the mean of its divisors is an integer number (316008).

Almost surely, 2^6663328 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 6663328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7584192).

6663328 is an abundant number, since it is smaller than the sum of its proper divisors (8505056).

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

6663328 is a wasteful number, since it uses less digits than its factorization.

6663328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 357 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 6663328 is about 2581.3422864859. The cubic root of 6663328 is about 188.1757824738.

The spelling of 6663328 in words is "six million, six hundred sixty-three thousand, three hundred twenty-eight".