660506411623607 has 2 divisors, whose sum is σ = 660506411623608. Its totient is φ = 660506411623606.

The previous prime is 660506411623603. The next prime is 660506411623613. The reversal of 660506411623607 is 706326114605066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660506411623607 - 2² = 660506411623603 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660506411623603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330253205811803 + 330253205811804.

It is an arithmetic number, because the mean of its divisors is an integer number (330253205811804).

Almost surely, 2^{660506411623607} is an apocalyptic number.

660506411623607 is a deficient number, since it is larger than the sum of its proper divisors (1).

660506411623607 is an equidigital number, since it uses as much as digits as its factorization.

660506411623607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 660506411623607 in words is "six hundred sixty trillion, five hundred six billion, four hundred eleven million, six hundred twenty-three thousand, six hundred seven".