65216413 has 2 divisors, whose sum is σ = 65216414. Its totient is φ = 65216412.

The previous prime is 65216399. The next prime is 65216461. The reversal of 65216413 is 31461256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36024004 + 29192409 = 6002^2 + 5403^2 .

It is a cyclic number.

It is not a de Polignac number, because 65216413 - 2⁹ = 65215901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65216713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32608206 + 32608207.

It is an arithmetic number, because the mean of its divisors is an integer number (32608207).

Almost surely, 2^65216413 is an apocalyptic number.

It is an amenable number.

65216413 is a deficient number, since it is larger than the sum of its proper divisors (1).

65216413 is an equidigital number, since it uses as much as digits as its factorization.

65216413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 65216413 is about 8075.6679599894. The cubic root of 65216413 is about 402.5183058171.

Adding to 65216413 its reverse (31461256), we get a palindrome (96677669).

The spelling of 65216413 in words is "sixty-five million, two hundred sixteen thousand, four hundred thirteen".