683686 has 8 divisors (see below), whose sum is σ = 1053360. Its totient is φ = 332568.

The previous prime is 683681. The next prime is 683687. The reversal of 683686 is 686386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4546 + ... + 4693.

It is an arithmetic number, because the mean of its divisors is an integer number (131670).

2⁶⁸³⁶⁸⁶ is an apocalyptic number.

683686 is a deficient number, since it is larger than the sum of its proper divisors (369674).

683686 is a wasteful number, since it uses less digits than its factorization.

683686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9278.

The product of its digits is 41472, while the sum is 37.

The square root of 683686 is about 826.8530703819. The cubic root of 683686 is about 88.0951965680.

It can be divided in two parts, 683 and 686, that added together give a square (1369 = 37²).

The spelling of 683686 in words is "six hundred eighty-three thousand, six hundred eighty-six".