65243593 has 2 divisors, whose sum is σ = 65243594. Its totient is φ = 65243592.

The previous prime is 65243539. The next prime is 65243611. The reversal of 65243593 is 39534256.

Together with previous prime (65243539) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60031504 + 5212089 = 7748^2 + 2283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65243593 is a prime.

It is not a weakly prime, because it can be changed into another prime (65243293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32621796 + 32621797.

It is an arithmetic number, because the mean of its divisors is an integer number (32621797).

Almost surely, 2^65243593 is an apocalyptic number.

It is an amenable number.

65243593 is a deficient number, since it is larger than the sum of its proper divisors (1).

65243593 is an equidigital number, since it uses as much as digits as its factorization.

65243593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 37.

The square root of 65243593 is about 8077.3506176221. The cubic root of 65243593 is about 402.5742167324.

The spelling of 65243593 in words is "sixty-five million, two hundred forty-three thousand, five hundred ninety-three".