683940 has 24 divisors (see below), whose sum is σ = 1915200. Its totient is φ = 182368.

The previous prime is 683939. The next prime is 683957. The reversal of 683940 is 49386.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 683898 and 683907.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 5640 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (79800).

2⁶⁸³⁹⁴⁰ is an apocalyptic number.

683940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

683940 is an abundant number, since it is smaller than the sum of its proper divisors (1231260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

683940 is a wasteful number, since it uses less digits than its factorization.

683940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11411 (or 11409 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 683940 is about 827.0066505174. The cubic root of 683940 is about 88.1061047965.

The spelling of 683940 in words is "six hundred eighty-three thousand, nine hundred forty".