65065961 has 2 divisors, whose sum is σ = 65065962. Its totient is φ = 65065960.

The previous prime is 65065939. The next prime is 65066047. The reversal of 65065961 is 16956056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50197225 + 14868736 = 7085^2 + 3856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65065961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65065921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32532980 + 32532981.

It is an arithmetic number, because the mean of its divisors is an integer number (32532981).

Almost surely, 2^65065961 is an apocalyptic number.

It is an amenable number.

65065961 is a deficient number, since it is larger than the sum of its proper divisors (1).

65065961 is an equidigital number, since it uses as much as digits as its factorization.

65065961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 65065961 is about 8066.3474385871. The cubic root of 65065961 is about 402.2085355674.

The spelling of 65065961 in words is "sixty-five million, sixty-five thousand, nine hundred sixty-one".