684006 has 8 divisors (see below), whose sum is σ = 1368024. Its totient is φ = 228000.

The previous prime is 683983. The next prime is 684007. The reversal of 684006 is 600486.

It is a sphenic number, since it is the product of 3 distinct primes.

684006 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684007) 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, 56995 + ... + 57006.

It is an arithmetic number, because the mean of its divisors is an integer number (171003).

2⁶⁸⁴⁰⁰⁶ is an apocalyptic number.

684006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

684006 is a wasteful number, since it uses less digits than its factorization.

684006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114006.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 684006 is about 827.0465524987. The cubic root of 684006 is about 88.1089387761.

The spelling of 684006 in words is "six hundred eighty-four thousand, six".