685741 has 8 divisors (see below), whose sum is σ = 789824.
Its totient is φ = 583200.
The previous prime is 685739. The next prime is 685747. The reversal of 685741 is 147586.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a 6-Lehmer number, since φ(685741) divides (685741-1)6.
It is a cyclic number.
It is not a de Polignac number, because 685741 - 21 = 685739 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (685747) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841 + ... + 1441.
It is an arithmetic number, because the mean of its divisors is an integer number (98728).
2685741 is an apocalyptic number.
It is an amenable number.
685741 is a deficient number, since it is larger than the sum of its proper divisors (104083).
685741 is a wasteful number, since it uses less digits than its factorization.
685741 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 771.
The product of its digits is 6720, while the sum is 31.
The square root of 685741 is about 828.0948013362.
The cubic root of 685741 is about 88.1833727910.
The spelling of 685741 in words is "six hundred eighty-five thousand, seven hundred forty-one".