65442312 has 96 divisors (see below), whose sum is σ = 192628800. Its totient is φ = 19951488.

The previous prime is 65442301. The next prime is 65442313. The reversal of 65442312 is 21324456.

65442312 is a `hidden beast` number, since 654 + 4 + 2 + 3 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (65442313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129853 + ... + 130355.

It is an arithmetic number, because the mean of its divisors is an integer number (2006550).

Almost surely, 2^65442312 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 65442312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96314400).

65442312 is an abundant number, since it is smaller than the sum of its proper divisors (127186488).

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

65442312 is a wasteful number, since it uses less digits than its factorization.

65442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 660 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 65442312 is about 8089.6422665035. The cubic root of 65442312 is about 402.9825227886.

Adding to 65442312 its reverse (21324456), we get a palindrome (86766768).

The spelling of 65442312 in words is "sixty-five million, four hundred forty-two thousand, three hundred twelve".