1683944 has 16 divisors (see below), whose sum is σ = 3243300. Its totient is φ = 819072.

The previous prime is 1683887. The next prime is 1683949. The reversal of 1683944 is 4493861.

It can be written as a sum of positive squares in 2 ways, for example, as 1276900 + 407044 = 1130^2 + 638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683949) 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, 2549 + ... + 3140.

2^1683944 is an apocalyptic number.

It is an amenable number.

1683944 is a deficient number, since it is larger than the sum of its proper divisors (1559356).

1683944 is a wasteful number, since it uses less digits than its factorization.

1683944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732 (or 5728 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 1683944 is about 1297.6686788237. The cubic root of 1683944 is about 118.9713934486.

The spelling of 1683944 in words is "one million, six hundred eighty-three thousand, nine hundred forty-four".