897568586561 has 2 divisors, whose sum is σ = 897568586562. Its totient is φ = 897568586560.

The previous prime is 897568586549. The next prime is 897568586573. The reversal of 897568586561 is 165685865798.

897568586561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (897568586549) and next prime (897568586573).

It can be written as a sum of positive squares in only one way, i.e., 897377290000 + 191296561 = 947300^2 + 13831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897568586561 is a prime.

It is a super-2 number, since 2×897568586561² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (897568586861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448784293280 + 448784293281.

It is an arithmetic number, because the mean of its divisors is an integer number (448784293281).

Almost surely, 2^897568586561 is an apocalyptic number.

It is an amenable number.

897568586561 is a deficient number, since it is larger than the sum of its proper divisors (1).

897568586561 is an equidigital number, since it uses as much as digits as its factorization.

897568586561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912000, while the sum is 74.

The spelling of 897568586561 in words is "eight hundred ninety-seven billion, five hundred sixty-eight million, five hundred eighty-six thousand, five hundred sixty-one".