682156213 has 2 divisors, whose sum is σ = 682156214. Its totient is φ = 682156212.

The previous prime is 682156193. The next prime is 682156217. The reversal of 682156213 is 312651286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670913604 + 11242609 = 25902^2 + 3353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-682156213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (682156217) 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, 341078106 + 341078107.

It is an arithmetic number, because the mean of its divisors is an integer number (341078107).

Almost surely, 2^682156213 is an apocalyptic number.

It is an amenable number.

682156213 is a deficient number, since it is larger than the sum of its proper divisors (1).

682156213 is an equidigital number, since it uses as much as digits as its factorization.

682156213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 682156213 is about 26118.1203956181. The cubic root of 682156213 is about 880.2944146605.

The spelling of 682156213 in words is "six hundred eighty-two million, one hundred fifty-six thousand, two hundred thirteen".