6689643383 has 2 divisors, whose sum is σ = 6689643384. Its totient is φ = 6689643382.

The previous prime is 6689643371. The next prime is 6689643397. The reversal of 6689643383 is 3833469866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6689643383 - 2⁶ = 6689643319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6689643083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3344821691 + 3344821692.

It is an arithmetic number, because the mean of its divisors is an integer number (3344821692).

Almost surely, 2^6689643383 is an apocalyptic number.

6689643383 is a deficient number, since it is larger than the sum of its proper divisors (1).

6689643383 is an equidigital number, since it uses as much as digits as its factorization.

6689643383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 56.

The square root of 6689643383 is about 81790.2401451420. The cubic root of 6689643383 is about 1884.2317702935.

The spelling of 6689643383 in words is "six billion, six hundred eighty-nine million, six hundred forty-three thousand, three hundred eighty-three".