64375489 has 2 divisors, whose sum is σ = 64375490. Its totient is φ = 64375488.

The previous prime is 64375433. The next prime is 64375511. The reversal of 64375489 is 98457346.

64375489 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., 55011889 + 9363600 = 7417^2 + 3060^2 .

It is a cyclic number.

It is not a de Polignac number, because 64375489 - 2²³ = 55986881 is a prime.

It is not a weakly prime, because it can be changed into another prime (64375589) 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, 32187744 + 32187745.

It is an arithmetic number, because the mean of its divisors is an integer number (32187745).

Almost surely, 2^64375489 is an apocalyptic number.

It is an amenable number.

64375489 is a deficient number, since it is larger than the sum of its proper divisors (1).

64375489 is an equidigital number, since it uses as much as digits as its factorization.

64375489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 64375489 is about 8023.4337412357. The cubic root of 64375489 is about 400.7807438561.

The spelling of 64375489 in words is "sixty-four million, three hundred seventy-five thousand, four hundred eighty-nine".