64929317 has 2 divisors, whose sum is σ = 64929318. Its totient is φ = 64929316.

The previous prime is 64929311. The next prime is 64929331. The reversal of 64929317 is 71392946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56640676 + 8288641 = 7526^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 64929317 - 2⁴ = 64929301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64929311) 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, 32464658 + 32464659.

It is an arithmetic number, because the mean of its divisors is an integer number (32464659).

Almost surely, 2^64929317 is an apocalyptic number.

It is an amenable number.

64929317 is a deficient number, since it is larger than the sum of its proper divisors (1).

64929317 is an equidigital number, since it uses as much as digits as its factorization.

64929317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 64929317 is about 8057.8729823695. The cubic root of 64929317 is about 401.9267809687.

The spelling of 64929317 in words is "sixty-four million, nine hundred twenty-nine thousand, three hundred seventeen".