897435858577 has 2 divisors, whose sum is σ = 897435858578. Its totient is φ = 897435858576.

The previous prime is 897435858569. The next prime is 897435858601. The reversal of 897435858577 is 775858534798.

897435858577 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., 790176988561 + 107258870016 = 888919^2 + 327504^2 .

It is a cyclic number.

It is not a de Polignac number, because 897435858577 - 2³ = 897435858569 is a prime.

It is a super-2 number, since 2×897435858577² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (897435858877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448717929288 + 448717929289.

It is an arithmetic number, because the mean of its divisors is an integer number (448717929289).

Almost surely, 2^897435858577 is an apocalyptic number.

It is an amenable number.

897435858577 is a deficient number, since it is larger than the sum of its proper divisors (1).

897435858577 is an equidigital number, since it uses as much as digits as its factorization.

897435858577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816000, while the sum is 76.

The spelling of 897435858577 in words is "eight hundred ninety-seven billion, four hundred thirty-five million, eight hundred fifty-eight thousand, five hundred seventy-seven".