683818 has 8 divisors (see below), whose sum is σ = 1031940. Its totient is φ = 339840.

The previous prime is 683807. The next prime is 683819. The reversal of 683818 is 818386.

It can be written as a sum of positive squares in 2 ways, for example, as 603729 + 80089 = 777^2 + 283^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683819) 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, 583 + ... + 1306.

2⁶⁸³⁸¹⁸ is an apocalyptic number.

683818 is a deficient number, since it is larger than the sum of its proper divisors (348122).

683818 is a wasteful number, since it uses less digits than its factorization.

683818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072.

The product of its digits is 9216, while the sum is 34.

The square root of 683818 is about 826.9328872406. The cubic root of 683818 is about 88.1008657483.

The spelling of 683818 in words is "six hundred eighty-three thousand, eight hundred eighteen".