64764289 has 2 divisors, whose sum is σ = 64764290. Its totient is φ = 64764288.

The previous prime is 64764269. The next prime is 64764299. The reversal of 64764289 is 98246746.

It is a happy number.

64764289 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., 62283664 + 2480625 = 7892^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 64764289 - 2¹⁵ = 64731521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64764229) 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, 32382144 + 32382145.

It is an arithmetic number, because the mean of its divisors is an integer number (32382145).

Almost surely, 2^64764289 is an apocalyptic number.

It is an amenable number.

64764289 is a deficient number, since it is larger than the sum of its proper divisors (1).

64764289 is an equidigital number, since it uses as much as digits as its factorization.

64764289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 64764289 is about 8047.6262959956. The cubic root of 64764289 is about 401.5859721698.

The spelling of 64764289 in words is "sixty-four million, seven hundred sixty-four thousand, two hundred eighty-nine".