666992327 has 2 divisors, whose sum is σ = 666992328. Its totient is φ = 666992326.

The previous prime is 666992299. The next prime is 666992353. The reversal of 666992327 is 723299666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666992327 - 2⁸ = 666992071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666992527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333496163 + 333496164.

It is an arithmetic number, because the mean of its divisors is an integer number (333496164).

Almost surely, 2^666992327 is an apocalyptic number.

666992327 is a deficient number, since it is larger than the sum of its proper divisors (1).

666992327 is an equidigital number, since it uses as much as digits as its factorization.

666992327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 50.

The square root of 666992327 is about 25826.1945899894. The cubic root of 666992327 is about 873.7226868334.

The spelling of 666992327 in words is "six hundred sixty-six million, nine hundred ninety-two thousand, three hundred twenty-seven".