6668885533 has 2 divisors, whose sum is σ = 6668885534. Its totient is φ = 6668885532.

The previous prime is 6668885527. The next prime is 6668885539. The reversal of 6668885533 is 3355888666.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (6668885527) and next prime (6668885539).

It can be written as a sum of positive squares in only one way, i.e., 4398077124 + 2270808409 = 66318^2 + 47653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6668885533 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668885539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334442766 + 3334442767.

It is an arithmetic number, because the mean of its divisors is an integer number (3334442767).

Almost surely, 2^6668885533 is an apocalyptic number.

It is an amenable number.

6668885533 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668885533 is an equidigital number, since it uses as much as digits as its factorization.

6668885533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24883200, while the sum is 58.

The square root of 6668885533 is about 81663.2446881705. The cubic root of 6668885533 is about 1882.2808379173.

The spelling of 6668885533 in words is "six billion, six hundred sixty-eight million, eight hundred eighty-five thousand, five hundred thirty-three".