6663240329 has 2 divisors, whose sum is σ = 6663240330. Its totient is φ = 6663240328.

The previous prime is 6663240307. The next prime is 6663240379. The reversal of 6663240329 is 9230423666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3382585600 + 3280654729 = 58160^2 + 57277^2 .

It is a cyclic number.

It is not a de Polignac number, because 6663240329 - 2¹² = 6663236233 is a prime.

It is not a weakly prime, because it can be changed into another prime (6663240379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331620164 + 3331620165.

It is an arithmetic number, because the mean of its divisors is an integer number (3331620165).

Almost surely, 2^6663240329 is an apocalyptic number.

It is an amenable number.

6663240329 is a deficient number, since it is larger than the sum of its proper divisors (1).

6663240329 is an equidigital number, since it uses as much as digits as its factorization.

6663240329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 41.

The square root of 6663240329 is about 81628.6734487337. The cubic root of 6663240329 is about 1881.7495717893.

The spelling of 6663240329 in words is "six billion, six hundred sixty-three million, two hundred forty thousand, three hundred twenty-nine".