897408085689 has 20 divisors (see below), whose sum is σ = 1340603721600. Its totient is φ = 598258155960.

The previous prime is 897408085669. The next prime is 897408085697. The reversal of 897408085689 is 986580804798.

897408085689 is a `hidden beast` number, since 8 + 97 + 408 + 0 + 8 + 56 + 89 = 666.

It is not a de Polignac number, because 897408085689 - 2⁸ = 897408085433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897408085669) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4323712 + ... + 4526510.

It is an arithmetic number, because the mean of its divisors is an integer number (67030186080).

Almost surely, 2^897408085689 is an apocalyptic number.

It is an amenable number.

897408085689 is a deficient number, since it is larger than the sum of its proper divisors (443195635911).

897408085689 is a wasteful number, since it uses less digits than its factorization.

897408085689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257442 (or 257433 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 72.

The spelling of 897408085689 in words is "eight hundred ninety-seven billion, four hundred eight million, eighty-five thousand, six hundred eighty-nine".