64363289 has 2 divisors, whose sum is σ = 64363290. Its totient is φ = 64363288.

The previous prime is 64363261. The next prime is 64363291. The reversal of 64363289 is 98236346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64128064 + 235225 = 8008^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 64363289 - 2²⁴ = 47586073 is a prime.

It is a Sophie Germain prime.

Together with 64363291, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64363259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32181644 + 32181645.

It is an arithmetic number, because the mean of its divisors is an integer number (32181645).

Almost surely, 2^64363289 is an apocalyptic number.

It is an amenable number.

64363289 is a deficient number, since it is larger than the sum of its proper divisors (1).

64363289 is an equidigital number, since it uses as much as digits as its factorization.

64363289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 41.

The square root of 64363289 is about 8022.6734322170. The cubic root of 64363289 is about 400.7554245197.

The spelling of 64363289 in words is "sixty-four million, three hundred sixty-three thousand, two hundred eighty-nine".