6664655983 has 2 divisors, whose sum is σ = 6664655984. Its totient is φ = 6664655982.

The previous prime is 6664655971. The next prime is 6664655999. The reversal of 6664655983 is 3895564666.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6664655983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6664655923) 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, 3332327991 + 3332327992.

It is an arithmetic number, because the mean of its divisors is an integer number (3332327992).

Almost surely, 2^6664655983 is an apocalyptic number.

6664655983 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664655983 is an equidigital number, since it uses as much as digits as its factorization.

6664655983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27993600, while the sum is 58.

The square root of 6664655983 is about 81637.3442916904. The cubic root of 6664655983 is about 1881.8828261592.

The spelling of 6664655983 in words is "six billion, six hundred sixty-four million, six hundred fifty-five thousand, nine hundred eighty-three".