64813339 has 2 divisors, whose sum is σ = 64813340. Its totient is φ = 64813338.

The previous prime is 64813327. The next prime is 64813387. The reversal of 64813339 is 93331846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64813339 - 2²⁵ = 31258907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64813298 and 64813307.

It is not a weakly prime, because it can be changed into another prime (64813319) 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, 32406669 + 32406670.

It is an arithmetic number, because the mean of its divisors is an integer number (32406670).

Almost surely, 2^64813339 is an apocalyptic number.

64813339 is a deficient number, since it is larger than the sum of its proper divisors (1).

64813339 is an equidigital number, since it uses as much as digits as its factorization.

64813339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 64813339 is about 8050.6732016646. The cubic root of 64813339 is about 401.6873285477.

The spelling of 64813339 in words is "sixty-four million, eight hundred thirteen thousand, three hundred thirty-nine".