897689056 has 24 divisors (see below), whose sum is σ = 1927992024. Its totient is φ = 408040320.

The previous prime is 897689021. The next prime is 897689077. The reversal of 897689056 is 650986798.

It is a super-2 number, since 2×897689056² = 1611691282524342272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274775 + ... + 1275478.

It is an arithmetic number, because the mean of its divisors is an integer number (80333001).

Almost surely, 2^897689056 is an apocalyptic number.

It is an amenable number.

897689056 is an abundant number, since it is smaller than the sum of its proper divisors (1030302968).

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

897689056 is a wasteful number, since it uses less digits than its factorization.

897689056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550274 (or 2550266 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The square root of 897689056 is about 29961.4595105112. The cubic root of 897689056 is about 964.6623089323.

The spelling of 897689056 in words is "eight hundred ninety-seven million, six hundred eighty-nine thousand, fifty-six".