64300309 has 2 divisors, whose sum is σ = 64300310. Its totient is φ = 64300308.

The previous prime is 64300297. The next prime is 64300331. The reversal of 64300309 is 90300346.

64300309 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., 60606225 + 3694084 = 7785^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 64300309 - 2²¹ = 62203157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64300399) 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, 32150154 + 32150155.

It is an arithmetic number, because the mean of its divisors is an integer number (32150155).

Almost surely, 2^64300309 is an apocalyptic number.

It is an amenable number.

64300309 is a deficient number, since it is larger than the sum of its proper divisors (1).

64300309 is an equidigital number, since it uses as much as digits as its factorization.

64300309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 64300309 is about 8018.7473460635. The cubic root of 64300309 is about 400.6246677178.

The spelling of 64300309 in words is "sixty-four million, three hundred thousand, three hundred nine".