684376 has 48 divisors (see below), whose sum is σ = 1627920. Its totient is φ = 264000.

The previous prime is 684373. The next prime is 684379. The reversal of 684376 is 673486.

It is an interprime number because it is at equal distance from previous prime (684373) and next prime (684379).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684373) 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, 6726 + ... + 6826.

It is an arithmetic number, because the mean of its divisors is an integer number (33915).

2⁶⁸⁴³⁷⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813960).

684376 is an abundant number, since it is smaller than the sum of its proper divisors (943544).

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

684376 is a wasteful number, since it uses less digits than its factorization.

684376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 121 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 684376 is about 827.2702097864. The cubic root of 684376 is about 88.1248228623.

It can be divided in two parts, 68 and 4376, that added together give a palindrome (4444).

The spelling of 684376 in words is "six hundred eighty-four thousand, three hundred seventy-six".