660560296247 has 2 divisors, whose sum is σ = 660560296248. Its totient is φ = 660560296246.

The previous prime is 660560296211. The next prime is 660560296259. The reversal of 660560296247 is 742692065066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660560296247 - 2⁸ = 660560295991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660560296267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330280148123 + 330280148124.

It is an arithmetic number, because the mean of its divisors is an integer number (330280148124).

Almost surely, 2^660560296247 is an apocalyptic number.

660560296247 is a deficient number, since it is larger than the sum of its proper divisors (1).

660560296247 is an equidigital number, since it uses as much as digits as its factorization.

660560296247 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 660560296247 in words is "six hundred sixty billion, five hundred sixty million, two hundred ninety-six thousand, two hundred forty-seven".