65897568 has 216 divisors, whose sum is σ = 216111168. Its totient is φ = 19008000.

The previous prime is 65897563. The next prime is 65897569. The reversal of 65897568 is 86579856.

65897568 is a `hidden beast` number, since 6 + 589 + 7 + 56 + 8 = 666.

Its product of digits (3628800) is a multiple of the sum of its prime divisors (108).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65897561) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1080258 + ... + 1080318.

Almost surely, 2^65897568 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 65897568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108055584).

65897568 is an abundant number, since it is smaller than the sum of its proper divisors (150213600).

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

65897568 is a wasteful number, since it uses less digits than its factorization.

65897568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 108 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 65897568 is about 8117.7317028835. The cubic root of 65897568 is about 403.9148269946.

The spelling of 65897568 in words is "sixty-five million, eight hundred ninety-seven thousand, five hundred sixty-eight".