6663656359 has 2 divisors, whose sum is σ = 6663656360. Its totient is φ = 6663656358.

The previous prime is 6663656353. The next prime is 6663656407. The reversal of 6663656359 is 9536563666.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6663656359 - 2⁹ = 6663655847 is a prime.

It is a super-2 number, since 2×6663656359² = 88808632141682273762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6663656353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331828179 + 3331828180.

It is an arithmetic number, because the mean of its divisors is an integer number (3331828180).

Almost surely, 2^6663656359 is an apocalyptic number.

6663656359 is a deficient number, since it is larger than the sum of its proper divisors (1).

6663656359 is an equidigital number, since it uses as much as digits as its factorization.

6663656359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15746400, while the sum is 55.

The square root of 6663656359 is about 81631.2217169387. The cubic root of 6663656359 is about 1881.7887343160.

The spelling of 6663656359 in words is "six billion, six hundred sixty-three million, six hundred fifty-six thousand, three hundred fifty-nine".