685367 has 2 divisors, whose sum is σ = 685368. Its totient is φ = 685366.

The previous prime is 685361. The next prime is 685369. The reversal of 685367 is 763586.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 685367 - 2¹² = 681271 is a prime.

Together with 685369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685367.

It is not a weakly prime, because it can be changed into another prime (685361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342683 + 342684.

It is an arithmetic number, because the mean of its divisors is an integer number (342684).

2⁶⁸⁵³⁶⁷ is an apocalyptic number.

685367 is a deficient number, since it is larger than the sum of its proper divisors (1).

685367 is an equidigital number, since it uses as much as digits as its factorization.

685367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 685367 is about 827.8689509820. The cubic root of 685367 is about 88.1673382731.

The spelling of 685367 in words is "six hundred eighty-five thousand, three hundred sixty-seven".