6680066623 has 2 divisors, whose sum is σ = 6680066624. Its totient is φ = 6680066622.

The previous prime is 6680066621. The next prime is 6680066647. The reversal of 6680066623 is 3266600866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6680066623 - 2¹ = 6680066621 is a prime.

Together with 6680066621, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6680066623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6680066621) 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, 3340033311 + 3340033312.

It is an arithmetic number, because the mean of its divisors is an integer number (3340033312).

Almost surely, 2^6680066623 is an apocalyptic number.

6680066623 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680066623 is an equidigital number, since it uses as much as digits as its factorization.

6680066623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 6680066623 is about 81731.6745393119. The cubic root of 6680066623 is about 1883.3321980171.

The spelling of 6680066623 in words is "six billion, six hundred eighty million, sixty-six thousand, six hundred twenty-three".