65312449 has 2 divisors, whose sum is σ = 65312450. Its totient is φ = 65312448.

The previous prime is 65312441. The next prime is 65312491. The reversal of 65312449 is 94421356.

It is a happy number.

65312449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41692849 + 23619600 = 6457^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 65312449 - 2³ = 65312441 is a prime.

It is not a weakly prime, because it can be changed into another prime (65312441) 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, 32656224 + 32656225.

It is an arithmetic number, because the mean of its divisors is an integer number (32656225).

Almost surely, 2^65312449 is an apocalyptic number.

It is an amenable number.

65312449 is a deficient number, since it is larger than the sum of its proper divisors (1).

65312449 is an equidigital number, since it uses as much as digits as its factorization.

65312449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 65312449 is about 8081.6117823117. The cubic root of 65312449 is about 402.7157882556.

The spelling of 65312449 in words is "sixty-five million, three hundred twelve thousand, four hundred forty-nine".