6663272 has 64 divisors (see below), whose sum is σ = 16156800. Its totient is φ = 2499840.

The previous prime is 6663257. The next prime is 6663289. The reversal of 6663272 is 2723666.

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 15 ways as a sum of consecutive naturals, for example, 17678 + ... + 18050.

It is an arithmetic number, because the mean of its divisors is an integer number (252450).

Almost surely, 2^6663272 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 6663272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8078400).

6663272 is an abundant number, since it is smaller than the sum of its proper divisors (9493528).

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

6663272 is a wasteful number, since it uses less digits than its factorization.

6663272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 422 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 6663272 is about 2581.3314393932. The cubic root of 6663272 is about 188.1752553161.

The spelling of 6663272 in words is "six million, six hundred sixty-three thousand, two hundred seventy-two".