65957533 has 2 divisors, whose sum is σ = 65957534. Its totient is φ = 65957532.

The previous prime is 65957519. The next prime is 65957597. The reversal of 65957533 is 33575956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64931364 + 1026169 = 8058^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 65957533 - 2²⁵ = 32403101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65957533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65957833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32978766 + 32978767.

It is an arithmetic number, because the mean of its divisors is an integer number (32978767).

Almost surely, 2^65957533 is an apocalyptic number.

It is an amenable number.

65957533 is a deficient number, since it is larger than the sum of its proper divisors (1).

65957533 is an equidigital number, since it uses as much as digits as its factorization.

65957533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 43.

The square root of 65957533 is about 8121.4243208935. The cubic root of 65957533 is about 404.0373070309.

The spelling of 65957533 in words is "sixty-five million, nine hundred fifty-seven thousand, five hundred thirty-three".