64349317 has 2 divisors, whose sum is σ = 64349318. Its totient is φ = 64349316.

The previous prime is 64349309. The next prime is 64349323. The reversal of 64349317 is 71394346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49364676 + 14984641 = 7026^2 + 3871^2 .

It is a cyclic number.

It is not a de Polignac number, because 64349317 - 2³ = 64349309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64349387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32174658 + 32174659.

It is an arithmetic number, because the mean of its divisors is an integer number (32174659).

Almost surely, 2^64349317 is an apocalyptic number.

It is an amenable number.

64349317 is a deficient number, since it is larger than the sum of its proper divisors (1).

64349317 is an equidigital number, since it uses as much as digits as its factorization.

64349317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 64349317 is about 8021.8026029067. The cubic root of 64349317 is about 400.7264237228.

It can be divided in two parts, 6434 and 9317, that added together give a palindrome (15751).

The spelling of 64349317 in words is "sixty-four million, three hundred forty-nine thousand, three hundred seventeen".