64717319 has 2 divisors, whose sum is σ = 64717320. Its totient is φ = 64717318.

The previous prime is 64717313. The next prime is 64717321. The reversal of 64717319 is 91371746.

64717319 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64717319 is a prime.

It is a super-2 number, since 2×64717319² = 8376662757095522, which contains 22 as substring.

Together with 64717321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64717313) 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, 32358659 + 32358660.

It is an arithmetic number, because the mean of its divisors is an integer number (32358660).

Almost surely, 2^64717319 is an apocalyptic number.

64717319 is a deficient number, since it is larger than the sum of its proper divisors (1).

64717319 is an equidigital number, since it uses as much as digits as its factorization.

64717319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 38.

The square root of 64717319 is about 8044.7075148821. The cubic root of 64717319 is about 401.4888659033.

The spelling of 64717319 in words is "sixty-four million, seven hundred seventeen thousand, three hundred nineteen".