65321489 has 2 divisors, whose sum is σ = 65321490. Its totient is φ = 65321488.

The previous prime is 65321483. The next prime is 65321527. The reversal of 65321489 is 98412356.

It is a happy number.

65321489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (65321527) can be obtained adding 65321489 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57988225 + 7333264 = 7615^2 + 2708^2 .

It is a cyclic number.

It is not a de Polignac number, because 65321489 - 2¹² = 65317393 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (65321483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32660744 + 32660745.

It is an arithmetic number, because the mean of its divisors is an integer number (32660745).

Almost surely, 2^65321489 is an apocalyptic number.

It is an amenable number.

65321489 is a deficient number, since it is larger than the sum of its proper divisors (1).

65321489 is an equidigital number, since it uses as much as digits as its factorization.

65321489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 65321489 is about 8082.1710573335. The cubic root of 65321489 is about 402.7343675761.

The spelling of 65321489 in words is "sixty-five million, three hundred twenty-one thousand, four hundred eighty-nine".