666666740711 has 2 divisors, whose sum is σ = 666666740712. Its totient is φ = 666666740710.

The previous prime is 666666740683. The next prime is 666666740731. The reversal of 666666740711 is 117047666666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666666740711 - 2³⁰ = 665592998887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666666740731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333333370355 + 333333370356.

It is an arithmetic number, because the mean of its divisors is an integer number (333333370356).

Almost surely, 2^666666740711 is an apocalyptic number.

666666740711 is a deficient number, since it is larger than the sum of its proper divisors (1).

666666740711 is an equidigital number, since it uses as much as digits as its factorization.

666666740711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 666666740711 in words is "six hundred sixty-six billion, six hundred sixty-six million, seven hundred forty thousand, seven hundred eleven".