666512606327 has 2 divisors, whose sum is σ = 666512606328. Its totient is φ = 666512606326.

The previous prime is 666512606297. The next prime is 666512606363. The reversal of 666512606327 is 723606215666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666512606327 - 2¹⁰ = 666512605303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666512606527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333256303163 + 333256303164.

It is an arithmetic number, because the mean of its divisors is an integer number (333256303164).

Almost surely, 2^666512606327 is an apocalyptic number.

666512606327 is a deficient number, since it is larger than the sum of its proper divisors (1).

666512606327 is an equidigital number, since it uses as much as digits as its factorization.

666512606327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 666512606327 in words is "six hundred sixty-six billion, five hundred twelve million, six hundred six thousand, three hundred twenty-seven".