606521742457 has 2 divisors, whose sum is σ = 606521742458. Its totient is φ = 606521742456.

The previous prime is 606521742419. The next prime is 606521742551. The reversal of 606521742457 is 754247125606.

606521742457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386770804281 + 219750938176 = 621909^2 + 468776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-606521742457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 606521742457.

It is not a weakly prime, because it can be changed into another prime (606521740457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303260871228 + 303260871229.

It is an arithmetic number, because the mean of its divisors is an integer number (303260871229).

Almost surely, 2^606521742457 is an apocalyptic number.

It is an amenable number.

606521742457 is a deficient number, since it is larger than the sum of its proper divisors (1).

606521742457 is an equidigital number, since it uses as much as digits as its factorization.

606521742457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 606521742457 in words is "six hundred six billion, five hundred twenty-one million, seven hundred forty-two thousand, four hundred fifty-seven".