65710681 has 2 divisors, whose sum is σ = 65710682. Its totient is φ = 65710680.

The previous prime is 65710651. The next prime is 65710703. The reversal of 65710681 is 18601756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 3553225 = 7884^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 65710681 - 2⁵ = 65710649 is a prime.

It is a super-2 number, since 2×65710681² = 8635787194967522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65710621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32855340 + 32855341.

It is an arithmetic number, because the mean of its divisors is an integer number (32855341).

Almost surely, 2^65710681 is an apocalyptic number.

It is an amenable number.

65710681 is a deficient number, since it is larger than the sum of its proper divisors (1).

65710681 is an equidigital number, since it uses as much as digits as its factorization.

65710681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 65710681 is about 8106.2124941307. The cubic root of 65710681 is about 403.5326282497.

The spelling of 65710681 in words is "sixty-five million, seven hundred ten thousand, six hundred eighty-one".