659976390501697 has 2 divisors, whose sum is σ = 659976390501698. Its totient is φ = 659976390501696.

The previous prime is 659976390501599. The next prime is 659976390501803. The reversal of 659976390501697 is 796105093679956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380101190561856 + 279875199939841 = 19496184^2 + 16729471^2 .

It is a cyclic number.

It is not a de Polignac number, because 659976390501697 - 2¹¹ = 659976390499649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 659976390501697.

It is not a weakly prime, because it can be changed into another prime (659976390001697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329988195250848 + 329988195250849.

It is an arithmetic number, because the mean of its divisors is an integer number (329988195250849).

Almost surely, 2^{659976390501697} is an apocalyptic number.

It is an amenable number.

659976390501697 is a deficient number, since it is larger than the sum of its proper divisors (1).

659976390501697 is an equidigital number, since it uses as much as digits as its factorization.

659976390501697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5208121800, while the sum is 82.

The spelling of 659976390501697 in words is "six hundred fifty-nine trillion, nine hundred seventy-six billion, three hundred ninety million, five hundred one thousand, six hundred ninety-seven".