6648216 has 32 divisors (see below), whose sum is σ = 16684800. Its totient is φ = 2207520.

The previous prime is 6648203. The next prime is 6648251. The reversal of 6648216 is 6128466.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 10221 + ... + 10851.

It is an arithmetic number, because the mean of its divisors is an integer number (521400).

Almost surely, 2^6648216 is an apocalyptic number.

It is an amenable number.

6648216 is an abundant number, since it is smaller than the sum of its proper divisors (10036584).

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

6648216 is a wasteful number, since it uses less digits than its factorization.

6648216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1075 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 6648216 is about 2578.4134656800. The cubic root of 6648216 is about 188.0334179315.

The spelling of 6648216 in words is "six million, six hundred forty-eight thousand, two hundred sixteen".