64342517 has 2 divisors, whose sum is σ = 64342518. Its totient is φ = 64342516.

The previous prime is 64342511. The next prime is 64342529. The reversal of 64342517 is 71524346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61606801 + 2735716 = 7849^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 64342517 - 2¹⁰ = 64341493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64342511) 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, 32171258 + 32171259.

It is an arithmetic number, because the mean of its divisors is an integer number (32171259).

Almost surely, 2^64342517 is an apocalyptic number.

It is an amenable number.

64342517 is a deficient number, since it is larger than the sum of its proper divisors (1).

64342517 is an equidigital number, since it uses as much as digits as its factorization.

64342517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 64342517 is about 8021.3787468240. The cubic root of 64342517 is about 400.7123078741.

The spelling of 64342517 in words is "sixty-four million, three hundred forty-two thousand, five hundred seventeen".