6663347 has 2 divisors, whose sum is σ = 6663348. Its totient is φ = 6663346.

The previous prime is 6663329. The next prime is 6663383. The reversal of 6663347 is 7433666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6663347 - 2¹⁸ = 6401203 is a prime.

It is not a weakly prime, because it can be changed into another prime (6663317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331673 + 3331674.

It is an arithmetic number, because the mean of its divisors is an integer number (3331674).

Almost surely, 2^6663347 is an apocalyptic number.

6663347 is a deficient number, since it is larger than the sum of its proper divisors (1).

6663347 is an equidigital number, since it uses as much as digits as its factorization.

6663347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 35.

The square root of 6663347 is about 2581.3459667391. The cubic root of 6663347 is about 188.1759613302.

The spelling of 6663347 in words is "six million, six hundred sixty-three thousand, three hundred forty-seven".