606056621561 has 2 divisors, whose sum is σ = 606056621562. Its totient is φ = 606056621560.

The previous prime is 606056621549. The next prime is 606056621647. The reversal of 606056621561 is 165126650606.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515301444025 + 90755177536 = 717845^2 + 301256^2 .

It is a cyclic number.

It is not a de Polignac number, because 606056621561 - 2³⁰ = 604982879737 is a prime.

It is not a weakly prime, because it can be changed into another prime (606056621531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303028310780 + 303028310781.

It is an arithmetic number, because the mean of its divisors is an integer number (303028310781).

Almost surely, 2^606056621561 is an apocalyptic number.

It is an amenable number.

606056621561 is a deficient number, since it is larger than the sum of its proper divisors (1).

606056621561 is an equidigital number, since it uses as much as digits as its factorization.

606056621561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 606056621561 in words is "six hundred six billion, fifty-six million, six hundred twenty-one thousand, five hundred sixty-one".