682666291 has 2 divisors, whose sum is σ = 682666292. Its totient is φ = 682666290.

The previous prime is 682666247. The next prime is 682666307. The reversal of 682666291 is 192666286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 682666291 - 2⁷ = 682666163 is a prime.

It is not a weakly prime, because it can be changed into another prime (682666091) 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, 341333145 + 341333146.

It is an arithmetic number, because the mean of its divisors is an integer number (341333146).

Almost surely, 2^682666291 is an apocalyptic number.

682666291 is a deficient number, since it is larger than the sum of its proper divisors (1).

682666291 is an equidigital number, since it uses as much as digits as its factorization.

682666291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 46.

The square root of 682666291 is about 26127.8834006890. The cubic root of 682666291 is about 880.5137715250.

The spelling of 682666291 in words is "six hundred eighty-two million, six hundred sixty-six thousand, two hundred ninety-one".