662720257193 has 2 divisors, whose sum is σ = 662720257194. Its totient is φ = 662720257192.

The previous prime is 662720257183. The next prime is 662720257217. The reversal of 662720257193 is 391752027266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483319724944 + 179400532249 = 695212^2 + 423557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662720257193 is a prime.

It is not a weakly prime, because it can be changed into another prime (662720257123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331360128596 + 331360128597.

It is an arithmetic number, because the mean of its divisors is an integer number (331360128597).

Almost surely, 2^662720257193 is an apocalyptic number.

It is an amenable number.

662720257193 is a deficient number, since it is larger than the sum of its proper divisors (1).

662720257193 is an equidigital number, since it uses as much as digits as its factorization.

662720257193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 662720257193 in words is "six hundred sixty-two billion, seven hundred twenty million, two hundred fifty-seven thousand, one hundred ninety-three".