687324 has 48 divisors (see below), whose sum is σ = 1806336. Its totient is φ = 201600.

The previous prime is 687317. The next prime is 687331. The reversal of 687324 is 423786.

It is an interprime number because it is at equal distance from previous prime (687317) and next prime (687331).

It is a junction number, because it is equal to n+sod(n) for n = 687291 and 687300.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5349 + ... + 5475.

It is an arithmetic number, because the mean of its divisors is an integer number (37632).

2⁶⁸⁷³²⁴ 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 687324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903168).

687324 is an abundant number, since it is smaller than the sum of its proper divisors (1119012).

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

687324 is a wasteful number, since it uses less digits than its factorization.

687324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 184 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 687324 is about 829.0500588022. The cubic root of 687324 is about 88.2511763306.

The spelling of 687324 in words is "six hundred eighty-seven thousand, three hundred twenty-four".