65246681 has 2 divisors, whose sum is σ = 65246682. Its totient is φ = 65246680.

The previous prime is 65246641. The next prime is 65246683. The reversal of 65246681 is 18664256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55636681 + 9610000 = 7459^2 + 3100^2 .

It is a cyclic number.

It is not a de Polignac number, because 65246681 - 2¹⁰ = 65245657 is a prime.

It is a super-2 number, since 2×65246681² = 8514258763031522, which contains 22 as substring.

Together with 65246683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65246683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32623340 + 32623341.

It is an arithmetic number, because the mean of its divisors is an integer number (32623341).

Almost surely, 2^65246681 is an apocalyptic number.

It is an amenable number.

65246681 is a deficient number, since it is larger than the sum of its proper divisors (1).

65246681 is an equidigital number, since it uses as much as digits as its factorization.

65246681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 65246681 is about 8077.5417671467. The cubic root of 65246681 is about 402.5805679541.

The spelling of 65246681 in words is "sixty-five million, two hundred forty-six thousand, six hundred eighty-one".