65216612 has 6 divisors (see below), whose sum is σ = 114129078. Its totient is φ = 32608304.

The previous prime is 65216611. The next prime is 65216623. The reversal of 65216612 is 21661256.

It can be written as a sum of positive squares in only one way, i.e., 34035556 + 31181056 = 5834^2 + 5584^2 .

It is not an unprimeable number, because it can be changed into a prime (65216611) 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 as a sum of consecutive naturals, namely, 8152073 + ... + 8152080.

It is an arithmetic number, because the mean of its divisors is an integer number (19021513).

Almost surely, 2^65216612 is an apocalyptic number.

It is an amenable number.

65216612 is a deficient number, since it is larger than the sum of its proper divisors (48912466).

65216612 is a wasteful number, since it uses less digits than its factorization.

65216612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16304157 (or 16304155 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 65216612 is about 8075.6802809423. The cubic root of 65216612 is about 402.5187152287.

Adding to 65216612 its reverse (21661256), we get a palindrome (86877868).

The spelling of 65216612 in words is "sixty-five million, two hundred sixteen thousand, six hundred twelve".