667706870297 has 2 divisors, whose sum is σ = 667706870298. Its totient is φ = 667706870296.

The previous prime is 667706870279. The next prime is 667706870317. The reversal of 667706870297 is 792078607766.

Together with previous prime (667706870279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555495939856 + 112210930441 = 745316^2 + 334979^2 .

It is a cyclic number.

It is not a de Polignac number, because 667706870297 - 2²⁰ = 667705821721 is a prime.

It is not a weakly prime, because it can be changed into another prime (667706870497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333853435148 + 333853435149.

It is an arithmetic number, because the mean of its divisors is an integer number (333853435149).

Almost surely, 2^667706870297 is an apocalyptic number.

It is an amenable number.

667706870297 is a deficient number, since it is larger than the sum of its proper divisors (1).

667706870297 is an equidigital number, since it uses as much as digits as its factorization.

667706870297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74680704, while the sum is 65.

The spelling of 667706870297 in words is "six hundred sixty-seven billion, seven hundred six million, eight hundred seventy thousand, two hundred ninety-seven".