685942267 has 2 divisors, whose sum is σ = 685942268. Its totient is φ = 685942266.

The previous prime is 685942261. The next prime is 685942273. The reversal of 685942267 is 762249586.

It is a balanced prime because it is at equal distance from previous prime (685942261) and next prime (685942273).

It is a cyclic number.

It is not a de Polignac number, because 685942267 - 2⁷ = 685942139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 685942267.

It is not a weakly prime, because it can be changed into another prime (685942261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342971133 + 342971134.

It is an arithmetic number, because the mean of its divisors is an integer number (342971134).

Almost surely, 2^685942267 is an apocalyptic number.

685942267 is a deficient number, since it is larger than the sum of its proper divisors (1).

685942267 is an equidigital number, since it uses as much as digits as its factorization.

685942267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The square root of 685942267 is about 26190.4995561368. The cubic root of 685942267 is about 881.9199930684.

The spelling of 685942267 in words is "six hundred eighty-five million, nine hundred forty-two thousand, two hundred sixty-seven".