684382 has 4 divisors (see below), whose sum is σ = 1026576. Its totient is φ = 342190.

The previous prime is 684379. The next prime is 684407. The reversal of 684382 is 283486.

It is a happy number.

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 171094 + ... + 171097.

It is an arithmetic number, because the mean of its divisors is an integer number (256644).

2⁶⁸⁴³⁸² is an apocalyptic number.

684382 is a deficient number, since it is larger than the sum of its proper divisors (342194).

684382 is a wasteful number, since it uses less digits than its factorization.

684382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342193.

The product of its digits is 9216, while the sum is 31.

The square root of 684382 is about 827.2738361631. The cubic root of 684382 is about 88.1250803949.

The spelling of 684382 in words is "six hundred eighty-four thousand, three hundred eighty-two".