606666006403 has 2 divisors, whose sum is σ = 606666006404. Its totient is φ = 606666006402.

The previous prime is 606666006391. The next prime is 606666006421. The reversal of 606666006403 is 304600666606.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 606666006403 - 2¹⁷ = 606665875331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 606666006403.

It is not a weakly prime, because it can be changed into another prime (606666006703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303333003201 + 303333003202.

It is an arithmetic number, because the mean of its divisors is an integer number (303333003202).

Almost surely, 2^606666006403 is an apocalyptic number.

606666006403 is a deficient number, since it is larger than the sum of its proper divisors (1).

606666006403 is an equidigital number, since it uses as much as digits as its factorization.

606666006403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 606666006403 in words is "six hundred six billion, six hundred sixty-six million, six thousand, four hundred three".