65332681 has 2 divisors, whose sum is σ = 65332682. Its totient is φ = 65332680.

The previous prime is 65332669. The next prime is 65332691. The reversal of 65332681 is 18623356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45441081 + 19891600 = 6741^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 65332681 - 2¹¹ = 65330633 is a prime.

It is a super-2 number, since 2×65332681² = 8536718413295522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65332651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32666340 + 32666341.

It is an arithmetic number, because the mean of its divisors is an integer number (32666341).

Almost surely, 2^65332681 is an apocalyptic number.

It is an amenable number.

65332681 is a deficient number, since it is larger than the sum of its proper divisors (1).

65332681 is an equidigital number, since it uses as much as digits as its factorization.

65332681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 65332681 is about 8082.8634158941. The cubic root of 65332681 is about 402.7573673868.

The spelling of 65332681 in words is "sixty-five million, three hundred thirty-two thousand, six hundred eighty-one".