65212 has 24 divisors (see below), whose sum is σ = 139104. Its totient is φ = 26112.
The previous prime is 65203. The next prime is 65213. The reversal of 65212 is 21256.
It is a happy number.
It is an alternating number because its digits alternate between even and odd.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (65213) 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, 408 + ... + 544.
It is an arithmetic number, because the mean of its divisors is an integer number (5796).
265212 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 65212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69552).
65212 is an abundant number, since it is smaller than the sum of its proper divisors (73892).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
65212 is a wasteful number, since it uses less digits than its factorization.
65212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 165 (or 163 counting only the distinct ones).
The product of its digits is 120, while the sum is 16.
The square root of 65212 is about 255.3664034285. The cubic root of 65212 is about 40.2509226542.
Adding to 65212 its reverse (21256), we get a palindrome (86468).
Subtracting from 65212 its reverse (21256), we obtain a triangular number (43956 = T296).
The spelling of 65212 in words is "sixty-five thousand, two hundred twelve".
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