1000685 has 8 divisors (see below), whose sum is σ = 1372416.
Its totient is φ = 686160.
The previous prime is 1000679. The next prime is 1000691. The reversal of 1000685 is 5860001.
Adding to 1000685 its reverse (5860001), we get a palindrome (6860686).
It is an interprime number because it is at equal distance from previous prime (1000679) and next prime (1000691).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1000685 - 24 = 1000669 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14261 + ... + 14330.
It is an arithmetic number, because the mean of its divisors is an integer number (171552).
21000685 is an apocalyptic number.
It is an amenable number.
1000685 is a deficient number, since it is larger than the sum of its proper divisors (371731).
1000685 is an equidigital number, since it uses as much as digits as its factorization.
1000685 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28603.
The product of its (nonzero) digits is 240, while the sum is 20.
The square root of 1000685 is about 1000.3424413670.
The cubic root of 1000685 is about 100.0228281217.
The spelling of 1000685 in words is "one million, six hundred eighty-five", and thus it is an aban number.