65597243 has 2 divisors, whose sum is σ = 65597244. Its totient is φ = 65597242.

The previous prime is 65597239. The next prime is 65597261. The reversal of 65597243 is 34279556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65597243 - 2² = 65597239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65597243.

It is not a weakly prime, because it can be changed into another prime (65597293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32798621 + 32798622.

It is an arithmetic number, because the mean of its divisors is an integer number (32798622).

Almost surely, 2^65597243 is an apocalyptic number.

65597243 is a deficient number, since it is larger than the sum of its proper divisors (1).

65597243 is an equidigital number, since it uses as much as digits as its factorization.

65597243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 65597243 is about 8099.2124925822. The cubic root of 65597243 is about 403.3002849926.

The spelling of 65597243 in words is "sixty-five million, five hundred ninety-seven thousand, two hundred forty-three".