683931 has 4 divisors (see below), whose sum is σ = 911912. Its totient is φ = 455952.

The previous prime is 683923. The next prime is 683933. The reversal of 683931 is 139386.

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

It is not a de Polignac number, because 683931 - 2³ = 683923 is a prime.

It is a super-2 number, since 2×683931² = 935523225522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683933) 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, 113986 + ... + 113991.

It is an arithmetic number, because the mean of its divisors is an integer number (227978).

2⁶⁸³⁹³¹ is an apocalyptic number.

683931 is a deficient number, since it is larger than the sum of its proper divisors (227981).

683931 is a wasteful number, since it uses less digits than its factorization.

683931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227980.

The product of its digits is 3888, while the sum is 30.

The square root of 683931 is about 827.0012091890. The cubic root of 683931 is about 88.1057183307.

The spelling of 683931 in words is "six hundred eighty-three thousand, nine hundred thirty-one".