666363727 has 2 divisors, whose sum is σ = 666363728. Its totient is φ = 666363726.

The previous prime is 666363623. The next prime is 666363743. The reversal of 666363727 is 727363666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666363727 - 2²³ = 657975119 is a prime.

It is a super-2 number, since 2×666363727² = 888081233322661058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666363767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333181863 + 333181864.

It is an arithmetic number, because the mean of its divisors is an integer number (333181864).

Almost surely, 2^666363727 is an apocalyptic number.

666363727 is a deficient number, since it is larger than the sum of its proper divisors (1).

666363727 is an equidigital number, since it uses as much as digits as its factorization.

666363727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 46.

The square root of 666363727 is about 25814.0219067080. The cubic root of 666363727 is about 873.4481236012.

The spelling of 666363727 in words is "six hundred sixty-six million, three hundred sixty-three thousand, seven hundred twenty-seven".