64304609 has 2 divisors, whose sum is σ = 64304610. Its totient is φ = 64304608.

The previous prime is 64304599. The next prime is 64304621. The reversal of 64304609 is 90640346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60403984 + 3900625 = 7772^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 64304609 - 2¹² = 64300513 is a prime.

It is not a weakly prime, because it can be changed into another prime (64304689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32152304 + 32152305.

It is an arithmetic number, because the mean of its divisors is an integer number (32152305).

Almost surely, 2^64304609 is an apocalyptic number.

It is an amenable number.

64304609 is a deficient number, since it is larger than the sum of its proper divisors (1).

64304609 is an equidigital number, since it uses as much as digits as its factorization.

64304609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 64304609 is about 8019.0154632598. The cubic root of 64304609 is about 400.6335979376.

The spelling of 64304609 in words is "sixty-four million, three hundred four thousand, six hundred nine".