685266341 has 2 divisors, whose sum is σ = 685266342. Its totient is φ = 685266340.

The previous prime is 685266223. The next prime is 685266353. The reversal of 685266341 is 143662586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567630625 + 117635716 = 23825^2 + 10846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-685266341 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 (685236341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342633170 + 342633171.

It is an arithmetic number, because the mean of its divisors is an integer number (342633171).

Almost surely, 2^685266341 is an apocalyptic number.

It is an amenable number.

685266341 is a deficient number, since it is larger than the sum of its proper divisors (1).

685266341 is an equidigital number, since it uses as much as digits as its factorization.

685266341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The square root of 685266341 is about 26177.5923453629. The cubic root of 685266341 is about 881.6302171927.

The spelling of 685266341 in words is "six hundred eighty-five million, two hundred sixty-six thousand, three hundred forty-one".