65216256 has 108 divisors (see below), whose sum is σ = 202024872. Its totient is φ = 18622464.

The previous prime is 65216209. The next prime is 65216297. The reversal of 65216256 is 65261256.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36766 + ... + 38498.

Almost surely, 2^65216256 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 65216256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101012436).

65216256 is an abundant number, since it is smaller than the sum of its proper divisors (136808616).

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

65216256 is a wasteful number, since it uses less digits than its factorization.

65216256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1745 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 65216256 is about 8075.6582394254. The cubic root of 65216256 is about 402.5179828134.

The spelling of 65216256 in words is "sixty-five million, two hundred sixteen thousand, two hundred fifty-six".