685275011 has 2 divisors, whose sum is σ = 685275012. Its totient is φ = 685275010.

The previous prime is 685274977. The next prime is 685275023. The reversal of 685275011 is 110572586.

685275011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-685275011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (685275611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342637505 + 342637506.

It is an arithmetic number, because the mean of its divisors is an integer number (342637506).

Almost surely, 2^685275011 is an apocalyptic number.

685275011 is a deficient number, since it is larger than the sum of its proper divisors (1).

685275011 is an equidigital number, since it uses as much as digits as its factorization.

685275011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 685275011 is about 26177.7579444841. The cubic root of 685275011 is about 881.6339353099.

The spelling of 685275011 in words is "six hundred eighty-five million, two hundred seventy-five thousand, eleven".