65282881 has 2 divisors, whose sum is σ = 65282882. Its totient is φ = 65282880.

The previous prime is 65282831. The next prime is 65282891. The reversal of 65282881 is 18828256.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57532225 + 7750656 = 7585^2 + 2784^2 .

It is a cyclic number.

It is not a de Polignac number, because 65282881 - 2⁷ = 65282753 is a prime.

It is a super-2 number, since 2×65282881² = 8523709103320322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65282801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32641440 + 32641441.

It is an arithmetic number, because the mean of its divisors is an integer number (32641441).

Almost surely, 2^65282881 is an apocalyptic number.

It is an amenable number.

65282881 is a deficient number, since it is larger than the sum of its proper divisors (1).

65282881 is an equidigital number, since it uses as much as digits as its factorization.

65282881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 40.

The square root of 65282881 is about 8079.7822371646. The cubic root of 65282881 is about 402.6550071030.

It can be divided in two parts, 6528 and 2881, that added together give a square (9409 = 97²).

The spelling of 65282881 in words is "sixty-five million, two hundred eighty-two thousand, eight hundred eighty-one".