683993 has 4 divisors (see below), whose sum is σ = 695268. Its totient is φ = 672720.

The previous prime is 683983. The next prime is 684007. The reversal of 683993 is 399386.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24649 + 659344 = 157^2 + 812^2 .

It is a cyclic number.

It is not a de Polignac number, because 683993 - 2⁸ = 683737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (683923) 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 3 ways as a sum of consecutive naturals, for example, 5546 + ... + 5667.

It is an arithmetic number, because the mean of its divisors is an integer number (173817).

2⁶⁸³⁹⁹³ is an apocalyptic number.

It is an amenable number.

683993 is a deficient number, since it is larger than the sum of its proper divisors (11275).

683993 is a wasteful number, since it uses less digits than its factorization.

683993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274.

The product of its digits is 34992, while the sum is 38.

The square root of 683993 is about 827.0386931698. The cubic root of 683993 is about 88.1083805824.

The spelling of 683993 in words is "six hundred eighty-three thousand, nine hundred ninety-three".