684030 has 24 divisors (see below), whose sum is σ = 1652616. Its totient is φ = 181200.

The previous prime is 684017. The next prime is 684037. The reversal of 684030 is 30486.

It is a junction number, because it is equal to n+sod(n) for n = 683988 and 684006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4455 + ... + 4605.

It is an arithmetic number, because the mean of its divisors is an integer number (68859).

2⁶⁸⁴⁰³⁰ is an apocalyptic number.

684030 is an abundant number, since it is smaller than the sum of its proper divisors (968586).

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

684030 is a wasteful number, since it uses less digits than its factorization.

684030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 684030 is about 827.0610618328. The cubic root of 684030 is about 88.1099692689.

The spelling of 684030 in words is "six hundred eighty-four thousand, thirty".