65351617 has 2 divisors, whose sum is σ = 65351618. Its totient is φ = 65351616.

The previous prime is 65351591. The next prime is 65351623. The reversal of 65351617 is 71615356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 23049601 = 6504^2 + 4801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65351617 is a prime.

It is not a weakly prime, because it can be changed into another prime (65351677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32675808 + 32675809.

It is an arithmetic number, because the mean of its divisors is an integer number (32675809).

Almost surely, 2^65351617 is an apocalyptic number.

It is an amenable number.

65351617 is a deficient number, since it is larger than the sum of its proper divisors (1).

65351617 is an equidigital number, since it uses as much as digits as its factorization.

65351617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 65351617 is about 8084.0346980948. The cubic root of 65351617 is about 402.7962753099.

The spelling of 65351617 in words is "sixty-five million, three hundred fifty-one thousand, six hundred seventeen".