6663330 has 128 divisors (see below), whose sum is σ = 19699200. Its totient is φ = 1596672.

The previous prime is 6663329. The next prime is 6663347. The reversal of 6663330 is 333666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6663294 and 6663303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180072 + ... + 180108.

It is an arithmetic number, because the mean of its divisors is an integer number (153900).

Almost surely, 2^6663330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6663330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9849600).

6663330 is an abundant number, since it is smaller than the sum of its proper divisors (13035870).

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

6663330 is a wasteful number, since it uses less digits than its factorization.

6663330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

The square root of 6663330 is about 2581.3426738812. The cubic root of 6663330 is about 188.1758013008.

Adding to 6663330 its reverse (333666), we get a palindrome (6996996).

The spelling of 6663330 in words is "six million, six hundred sixty-three thousand, three hundred thirty".