683740 has 24 divisors (see below), whose sum is σ = 1521072. Its totient is φ = 257280.

The previous prime is 683737. The next prime is 683747. The reversal of 683740 is 47386.

It is a junction number, because it is equal to n+sod(n) for n = 683699 and 683708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (63378).

2⁶⁸³⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

683740 is an abundant number, since it is smaller than the sum of its proper divisors (837332).

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

683740 is a wasteful number, since it uses less digits than its factorization.

683740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2035 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 683740 is about 826.8857236644. The cubic root of 683740 is about 88.0975158663.

The spelling of 683740 in words is "six hundred eighty-three thousand, seven hundred forty".