64967317 has 2 divisors, whose sum is σ = 64967318. Its totient is φ = 64967316.

The previous prime is 64967311. The next prime is 64967321. The reversal of 64967317 is 71376946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61246276 + 3721041 = 7826^2 + 1929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64967317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64967311) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32483658 + 32483659.

It is an arithmetic number, because the mean of its divisors is an integer number (32483659).

Almost surely, 2^64967317 is an apocalyptic number.

It is an amenable number.

64967317 is a deficient number, since it is larger than the sum of its proper divisors (1).

64967317 is an equidigital number, since it uses as much as digits as its factorization.

64967317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 43.

The square root of 64967317 is about 8060.2305798283. The cubic root of 64967317 is about 402.0051751353.

The spelling of 64967317 in words is "sixty-four million, nine hundred sixty-seven thousand, three hundred seventeen".