65464681 has 2 divisors, whose sum is σ = 65464682. Its totient is φ = 65464680.

The previous prime is 65464669. The next prime is 65464723. The reversal of 65464681 is 18646456.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65464281 + 400 = 8091^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 65464681 - 2¹¹ = 65462633 is a prime.

It is a super-2 number, since 2×65464681² = 8571248916863522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65464631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32732340 + 32732341.

It is an arithmetic number, because the mean of its divisors is an integer number (32732341).

Almost surely, 2^65464681 is an apocalyptic number.

It is an amenable number.

65464681 is a deficient number, since it is larger than the sum of its proper divisors (1).

65464681 is an equidigital number, since it uses as much as digits as its factorization.

65464681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 65464681 is about 8091.0247187856. The cubic root of 65464681 is about 403.0284323788.

The spelling of 65464681 in words is "sixty-five million, four hundred sixty-four thousand, six hundred eighty-one".