64945163 has 2 divisors, whose sum is σ = 64945164. Its totient is φ = 64945162.

The previous prime is 64945147. The next prime is 64945171. The reversal of 64945163 is 36154946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64945163 - 2⁴ = 64945147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64945103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32472581 + 32472582.

It is an arithmetic number, because the mean of its divisors is an integer number (32472582).

Almost surely, 2^64945163 is an apocalyptic number.

64945163 is a deficient number, since it is larger than the sum of its proper divisors (1).

64945163 is an equidigital number, since it uses as much as digits as its factorization.

64945163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 64945163 is about 8058.8561843478. The cubic root of 64945163 is about 401.9594750532.

The spelling of 64945163 in words is "sixty-four million, nine hundred forty-five thousand, one hundred sixty-three".