682206409 has 2 divisors, whose sum is σ = 682206410. Its totient is φ = 682206408.

The previous prime is 682206397. The next prime is 682206467. The reversal of 682206409 is 904602286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650250000 + 31956409 = 25500^2 + 5653^2 .

It is a cyclic number.

It is not a de Polignac number, because 682206409 - 2⁹ = 682205897 is a prime.

It is not a weakly prime, because it can be changed into another prime (682206809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341103204 + 341103205.

It is an arithmetic number, because the mean of its divisors is an integer number (341103205).

Almost surely, 2^682206409 is an apocalyptic number.

It is an amenable number.

682206409 is a deficient number, since it is larger than the sum of its proper divisors (1).

682206409 is an equidigital number, since it uses as much as digits as its factorization.

682206409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 682206409 is about 26119.0813199852. The cubic root of 682206409 is about 880.3160060858.

The spelling of 682206409 in words is "six hundred eighty-two million, two hundred six thousand, four hundred nine".