65897712 has 120 divisors (see below), whose sum is σ = 202705776. Its totient is φ = 20653056.

The previous prime is 65897693. The next prime is 65897717. The reversal of 65897712 is 21779856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65897717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65598 + ... + 66594.

Almost surely, 2^65897712 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 65897712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101352888).

65897712 is an abundant number, since it is smaller than the sum of its proper divisors (136808064).

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

65897712 is a wasteful number, since it uses less digits than its factorization.

65897712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1019 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 65897712 is about 8117.7405723514. The cubic root of 65897712 is about 403.9151212072.

The spelling of 65897712 in words is "sixty-five million, eight hundred ninety-seven thousand, seven hundred twelve".