64652389 has 2 divisors, whose sum is σ = 64652390. Its totient is φ = 64652388.

The previous prime is 64652363. The next prime is 64652407. The reversal of 64652389 is 98325646.

64652389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64240225 + 412164 = 8015^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 64652389 - 2⁷ = 64652261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64652689) 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, 32326194 + 32326195.

It is an arithmetic number, because the mean of its divisors is an integer number (32326195).

Almost surely, 2^64652389 is an apocalyptic number.

It is an amenable number.

64652389 is a deficient number, since it is larger than the sum of its proper divisors (1).

64652389 is an equidigital number, since it uses as much as digits as its factorization.

64652389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 64652389 is about 8040.6709297172. The cubic root of 64652389 is about 401.3545515475.

It can be divided in two parts, 646 and 52389, that added together give a palindrome (53035).

The spelling of 64652389 in words is "sixty-four million, six hundred fifty-two thousand, three hundred eighty-nine".