65711641 has 2 divisors, whose sum is σ = 65711642. Its totient is φ = 65711640.

The previous prime is 65711627. The next prime is 65711669. The reversal of 65711641 is 14611756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51423241 + 14288400 = 7171^2 + 3780^2 .

It is a cyclic number.

It is not a de Polignac number, because 65711641 - 2⁵ = 65711609 is a prime.

It is equal to p_3880084 and since 65711641 and 3880084 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (65711441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32855820 + 32855821.

It is an arithmetic number, because the mean of its divisors is an integer number (32855821).

Almost surely, 2^65711641 is an apocalyptic number.

It is an amenable number.

65711641 is a deficient number, since it is larger than the sum of its proper divisors (1).

65711641 is an equidigital number, since it uses as much as digits as its factorization.

65711641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 65711641 is about 8106.2717077581. The cubic root of 65711641 is about 403.5345933764.

The spelling of 65711641 in words is "sixty-five million, seven hundred eleven thousand, six hundred forty-one".