666272599 has 2 divisors, whose sum is σ = 666272600. Its totient is φ = 666272598.

The previous prime is 666272567. The next prime is 666272627. The reversal of 666272599 is 995272666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666272599 - 2⁵ = 666272567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666272539) 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, 333136299 + 333136300.

It is an arithmetic number, because the mean of its divisors is an integer number (333136300).

Almost surely, 2^666272599 is an apocalyptic number.

666272599 is a deficient number, since it is larger than the sum of its proper divisors (1).

666272599 is an equidigital number, since it uses as much as digits as its factorization.

666272599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 52.

The square root of 666272599 is about 25812.2567591445. The cubic root of 666272599 is about 873.4083059030.

The spelling of 666272599 in words is "six hundred sixty-six million, two hundred seventy-two thousand, five hundred ninety-nine".