65218512 has 40 divisors (see below), whose sum is σ = 169140960. Its totient is φ = 21654400.

The previous prime is 65218499. The next prime is 65218519. The reversal of 65218512 is 21581256.

It is a self number, because there is not a number n which added to its sum of digits gives 65218512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65218519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10387 + ... + 15437.

It is an arithmetic number, because the mean of its divisors is an integer number (4228524).

Almost surely, 2^65218512 is an apocalyptic number.

It is an amenable number.

65218512 is an abundant number, since it is smaller than the sum of its proper divisors (103922448).

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

65218512 is a wasteful number, since it uses less digits than its factorization.

65218512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331 (or 5325 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 65218512 is about 8075.7979172339. The cubic root of 65218512 is about 402.5226241414.

Adding to 65218512 its reverse (21581256), we get a palindrome (86799768).

The spelling of 65218512 in words is "sixty-five million, two hundred eighteen thousand, five hundred twelve".