683444 has 12 divisors (see below), whose sum is σ = 1216068. Its totient is φ = 336000.

The previous prime is 683437. The next prime is 683447. The reversal of 683444 is 444386.

It can be written as a sum of positive squares in 2 ways, for example, as 150544 + 532900 = 388^2 + 730^2 .

It is a super-2 number, since 2×683444² = 934191402272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683447) by changing a digit.

683444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 1157 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (101339).

2⁶⁸³⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

683444 is a deficient number, since it is larger than the sum of its proper divisors (532624).

683444 is a wasteful number, since it uses less digits than its factorization.

683444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866 (or 2864 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 683444 is about 826.7067194598. The cubic root of 683444 is about 88.0848011752.

The spelling of 683444 in words is "six hundred eighty-three thousand, four hundred forty-four".