666006701827 has 2 divisors, whose sum is σ = 666006701828. Its totient is φ = 666006701826.

The previous prime is 666006701693. The next prime is 666006701851. The reversal of 666006701827 is 728107600666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666006701827 - 2²⁷ = 665872484099 is a prime.

It is not a weakly prime, because it can be changed into another prime (666006701887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333003350913 + 333003350914.

It is an arithmetic number, because the mean of its divisors is an integer number (333003350914).

Almost surely, 2^666006701827 is an apocalyptic number.

666006701827 is a deficient number, since it is larger than the sum of its proper divisors (1).

666006701827 is an equidigital number, since it uses as much as digits as its factorization.

666006701827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 666006701827 in words is "six hundred sixty-six billion, six million, seven hundred one thousand, eight hundred twenty-seven".