65597957 has 2 divisors, whose sum is σ = 65597958. Its totient is φ = 65597956.

The previous prime is 65597927. The next prime is 65597963. The reversal of 65597957 is 75979556.

65597957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58232161 + 7365796 = 7631^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 65597957 - 2⁶ = 65597893 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65597899 and 65597908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65597927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32798978 + 32798979.

It is an arithmetic number, because the mean of its divisors is an integer number (32798979).

Almost surely, 2^65597957 is an apocalyptic number.

It is an amenable number.

65597957 is a deficient number, since it is larger than the sum of its proper divisors (1).

65597957 is an equidigital number, since it uses as much as digits as its factorization.

65597957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2976750, while the sum is 53.

The square root of 65597957 is about 8099.2565708218. The cubic root of 65597957 is about 403.3017482419.

The spelling of 65597957 in words is "sixty-five million, five hundred ninety-seven thousand, nine hundred fifty-seven".