682848821 has 2 divisors, whose sum is σ = 682848822. Its totient is φ = 682848820.

The previous prime is 682848787. The next prime is 682848839. The reversal of 682848821 is 128848286.

682848821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390062500 + 292786321 = 19750^2 + 17111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-682848821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (682848721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341424410 + 341424411.

It is an arithmetic number, because the mean of its divisors is an integer number (341424411).

Almost surely, 2^682848821 is an apocalyptic number.

It is an amenable number.

682848821 is a deficient number, since it is larger than the sum of its proper divisors (1).

682848821 is an equidigital number, since it uses as much as digits as its factorization.

682848821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393216, while the sum is 47.

The square root of 682848821 is about 26131.3761788391. The cubic root of 682848821 is about 880.5922412247.

The spelling of 682848821 in words is "six hundred eighty-two million, eight hundred forty-eight thousand, eight hundred twenty-one".