1006685 has 4 divisors (see below), whose sum is σ = 1208028. Its totient is φ = 805344.

The previous prime is 1006651. The next prime is 1006711. The reversal of 1006685 is 5866001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 337561 + 669124 = 581^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006685 - 2¹⁰ = 1005661 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100664 + ... + 100673.

It is an arithmetic number, because the mean of its divisors is an integer number (302007).

2^1006685 is an apocalyptic number.

It is an amenable number.

1006685 is a deficient number, since it is larger than the sum of its proper divisors (201343).

1006685 is an equidigital number, since it uses as much as digits as its factorization.

1006685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201342.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1006685 is about 1003.3369324409. The cubic root of 1006685 is about 100.2223386223. Note that the first 3 decimals are identical.

The spelling of 1006685 in words is "one million, six thousand, six hundred eighty-five".