666160511 has 2 divisors, whose sum is σ = 666160512. Its totient is φ = 666160510.

The previous prime is 666160483. The next prime is 666160529. The reversal of 666160511 is 115061666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666160511 - 2⁶ = 666160447 is a prime.

It is a super-2 number, since 2×666160511² = 887539652831562242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666160211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333080255 + 333080256.

It is an arithmetic number, because the mean of its divisors is an integer number (333080256).

Almost surely, 2^666160511 is an apocalyptic number.

666160511 is a deficient number, since it is larger than the sum of its proper divisors (1).

666160511 is an equidigital number, since it uses as much as digits as its factorization.

666160511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 666160511 is about 25810.0854512340. The cubic root of 666160511 is about 873.3593249100.

The spelling of 666160511 in words is "six hundred sixty-six million, one hundred sixty thousand, five hundred eleven".