282068821 has 2 divisors, whose sum is σ = 282068822. Its totient is φ = 282068820.

The previous prime is 282068791. The next prime is 282068867. The reversal of 282068821 is 128860282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204804721 + 77264100 = 14311^2 + 8790^2 .

It is a cyclic number.

It is not a de Polignac number, because 282068821 - 2⁹ = 282068309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (282068621) 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, 141034410 + 141034411.

It is an arithmetic number, because the mean of its divisors is an integer number (141034411).

Almost surely, 2^282068821 is an apocalyptic number.

It is an amenable number.

282068821 is a deficient number, since it is larger than the sum of its proper divisors (1).

282068821 is an equidigital number, since it uses as much as digits as its factorization.

282068821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 282068821 is about 16794.9046141977. The cubic root of 282068821 is about 655.8205600885.

The spelling of 282068821 in words is "two hundred eighty-two million, sixty-eight thousand, eight hundred twenty-one".