682381421 has 2 divisors, whose sum is σ = 682381422. Its totient is φ = 682381420.

The previous prime is 682381387. The next prime is 682381439. The reversal of 682381421 is 124183286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670033225 + 12348196 = 25885^2 + 3514^2 .

It is a cyclic number.

It is not a de Polignac number, because 682381421 - 2²⁶ = 615272557 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 (682381451) 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, 341190710 + 341190711.

It is an arithmetic number, because the mean of its divisors is an integer number (341190711).

Almost surely, 2^682381421 is an apocalyptic number.

It is an amenable number.

682381421 is a deficient number, since it is larger than the sum of its proper divisors (1).

682381421 is an equidigital number, since it uses as much as digits as its factorization.

682381421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 35.

The square root of 682381421 is about 26122.4313761181. The cubic root of 682381421 is about 880.3912778755.

The spelling of 682381421 in words is "six hundred eighty-two million, three hundred eighty-one thousand, four hundred twenty-one".