65963549 has 2 divisors, whose sum is σ = 65963550. Its totient is φ = 65963548.

The previous prime is 65963539. The next prime is 65963561. The reversal of 65963549 is 94536956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65723449 + 240100 = 8107^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 65963549 - 2⁴ = 65963533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65963539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32981774 + 32981775.

It is an arithmetic number, because the mean of its divisors is an integer number (32981775).

Almost surely, 2^65963549 is an apocalyptic number.

It is an amenable number.

65963549 is a deficient number, since it is larger than the sum of its proper divisors (1).

65963549 is an equidigital number, since it uses as much as digits as its factorization.

65963549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 47.

The square root of 65963549 is about 8121.7946908303. The cubic root of 65963549 is about 404.0495907658.

The spelling of 65963549 in words is "sixty-five million, nine hundred sixty-three thousand, five hundred forty-nine".