6663329 has 2 divisors, whose sum is σ = 6663330. Its totient is φ = 6663328.

The previous prime is 6663317. The next prime is 6663347. The reversal of 6663329 is 9233666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6115729 + 547600 = 2473^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 6663329 - 2⁸ = 6663073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6663389) by changing a digit.

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 as a sum of consecutive naturals, namely, 3331664 + 3331665.

It is an arithmetic number, because the mean of its divisors is an integer number (3331665).

Almost surely, 2^6663329 is an apocalyptic number.

It is an amenable number.

6663329 is a deficient number, since it is larger than the sum of its proper divisors (1).

6663329 is an equidigital number, since it uses as much as digits as its factorization.

6663329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 35.

The square root of 6663329 is about 2581.3424801835. The cubic root of 6663329 is about 188.1757918873.

It can be divided in two parts, 66 and 63329, that multiplied together give a palindrome (4179714).

The spelling of 6663329 in words is "six million, six hundred sixty-three thousand, three hundred twenty-nine".