65317212 has 96 divisors (see below), whose sum is σ = 180320000. Its totient is φ = 20388672.

The previous prime is 65317201. The next prime is 65317229. The reversal of 65317212 is 21271356.

It is a happy number.

65317212 is a `hidden beast` number, since 653 + 1 + 7 + 2 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285114 + ... + 285342.

Almost surely, 2^65317212 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 65317212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90160000).

65317212 is an abundant number, since it is smaller than the sum of its proper divisors (115002788).

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

65317212 is a wasteful number, since it uses less digits than its factorization.

65317212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 392 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 65317212 is about 8081.9064582560. The cubic root of 65317212 is about 402.7255775515.

Adding to 65317212 its reverse (21271356), we get a palindrome (86588568).

The spelling of 65317212 in words is "sixty-five million, three hundred seventeen thousand, two hundred twelve".