65371212 has 60 divisors (see below), whose sum is σ = 172889640. Its totient is φ = 21536064.

The previous prime is 65371181. The next prime is 65371213. The reversal of 65371212 is 21217356.

It is a happy number.

65371212 is a `hidden beast` number, since 6 + 537 + 121 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (65371213) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27703 + ... + 29969.

It is an arithmetic number, because the mean of its divisors is an integer number (2881494).

Almost surely, 2^65371212 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 65371212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86444820).

65371212 is an abundant number, since it is smaller than the sum of its proper divisors (107518428).

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

65371212 is a wasteful number, since it uses less digits than its factorization.

65371212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372 (or 2361 counting only the distinct ones).

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

The square root of 65371212 is about 8085.2465639583. The cubic root of 65371212 is about 402.8365293727.

Adding to 65371212 its reverse (21217356), we get a palindrome (86588568).

The spelling of 65371212 in words is "sixty-five million, three hundred seventy-one thousand, two hundred twelve".