683643 has 8 divisors (see below), whose sum is σ = 941056. Its totient is φ = 441000.

The previous prime is 683603. The next prime is 683651. The reversal of 683643 is 346386.

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

It is a de Polignac number, because none of the positive numbers 2^k-683643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 683643.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 683643.

It is not an unprimeable number, because it can be changed into a prime (683603) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3583 + ... + 3768.

It is an arithmetic number, because the mean of its divisors is an integer number (117632).

2⁶⁸³⁶⁴³ is an apocalyptic number.

683643 is a deficient number, since it is larger than the sum of its proper divisors (257413).

683643 is a wasteful number, since it uses less digits than its factorization.

683643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7385.

The product of its digits is 10368, while the sum is 30.

The square root of 683643 is about 826.8270677717. The cubic root of 683643 is about 88.0933496320.

It can be divided in two parts, 683 and 643, that added together give a triangular number (1326 = T₅₁).

The spelling of 683643 in words is "six hundred eighty-three thousand, six hundred forty-three".