65987941 has 2 divisors, whose sum is σ = 65987942. Its totient is φ = 65987940.

The previous prime is 65987917. The next prime is 65987947. The reversal of 65987941 is 14978956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65124900 + 863041 = 8070^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 65987941 - 2¹¹ = 65985893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65987947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32993970 + 32993971.

It is an arithmetic number, because the mean of its divisors is an integer number (32993971).

Almost surely, 2^65987941 is an apocalyptic number.

It is an amenable number.

65987941 is a deficient number, since it is larger than the sum of its proper divisors (1).

65987941 is an equidigital number, since it uses as much as digits as its factorization.

65987941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 65987941 is about 8123.2961905867. The cubic root of 65987941 is about 404.0993877785.

The spelling of 65987941 in words is "sixty-five million, nine hundred eighty-seven thousand, nine hundred forty-one".