897626656 has 96 divisors (see below), whose sum is σ = 1928199168. Its totient is φ = 409743360.

The previous prime is 897626641. The next prime is 897626689. The reversal of 897626656 is 656626798.

It is a happy number.

It is a super-2 number, since 2×897626656² = 1611467227123484672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 897626597 and 897626606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4699521 + ... + 4699711.

It is an arithmetic number, because the mean of its divisors is an integer number (20085408).

Almost surely, 2^897626656 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 897626656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964099584).

897626656 is an abundant number, since it is smaller than the sum of its proper divisors (1030572512).

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

897626656 is a wasteful number, since it uses less digits than its factorization.

897626656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 426 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 55.

The square root of 897626656 is about 29960.4181546253. The cubic root of 897626656 is about 964.6399566035.

The spelling of 897626656 in words is "eight hundred ninety-seven million, six hundred twenty-six thousand, six hundred fifty-six".