897804656 has 90 divisors (see below), whose sum is σ = 2068280568. Its totient is φ = 376367040.

The previous prime is 897804653. The next prime is 897804673. The reversal of 897804656 is 656408798.

It is a junction number, because it is equal to n+sod(n) for n = 897804598 and 897804607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897804653) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7069265 + ... + 7069391.

Almost surely, 2^897804656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897804656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1034140284).

897804656 is an abundant number, since it is smaller than the sum of its proper divisors (1170475912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897804656 is a wasteful number, since it uses less digits than its factorization.

897804656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The square root of 897804656 is about 29963.3885934151. The cubic root of 897804656 is about 964.7037153175.

The spelling of 897804656 in words is "eight hundred ninety-seven million, eight hundred four thousand, six hundred fifty-six".