897685656 has 32 divisors (see below), whose sum is σ = 2564816640. Its totient is φ = 256481568.

The previous prime is 897685619. The next prime is 897685667. The reversal of 897685656 is 656586798.

It is a self number, because there is not a number n which added to its sum of digits gives 897685656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2671516 + ... + 2671851.

It is an arithmetic number, because the mean of its divisors is an integer number (80150520).

Almost surely, 2^897685656 is an apocalyptic number.

It is an amenable number.

897685656 is an abundant number, since it is smaller than the sum of its proper divisors (1667130984).

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

897685656 is a wasteful number, since it uses less digits than its factorization.

897685656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343383 (or 5343379 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 60.

The square root of 897685656 is about 29961.4027708984. The cubic root of 897685656 is about 964.6610910436.

The spelling of 897685656 in words is "eight hundred ninety-seven million, six hundred eighty-five thousand, six hundred fifty-six".