685712903 has 2 divisors, whose sum is σ = 685712904. Its totient is φ = 685712902.

The previous prime is 685712891. The next prime is 685712933. The reversal of 685712903 is 309217586.

685712903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685712903 - 2⁸ = 685712647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (685712933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342856451 + 342856452.

It is an arithmetic number, because the mean of its divisors is an integer number (342856452).

Almost surely, 2^685712903 is an apocalyptic number.

685712903 is a deficient number, since it is larger than the sum of its proper divisors (1).

685712903 is an equidigital number, since it uses as much as digits as its factorization.

685712903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 685712903 is about 26186.1204266688. The cubic root of 685712903 is about 881.8216838970.

The spelling of 685712903 in words is "six hundred eighty-five million, seven hundred twelve thousand, nine hundred three".