323680 has 72 divisors (see below), whose sum is σ = 928368. Its totient is φ = 104448.

The previous prime is 323651. The next prime is 323699. The reversal of 323680 is 86323.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 323680.

It is an unprimeable number.

323680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19032 + ... + 19048.

It is an arithmetic number, because the mean of its divisors is an integer number (12894).

2³²³⁶⁸⁰ 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 323680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464184).

323680 is an abundant number, since it is smaller than the sum of its proper divisors (604688).

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

323680 is a wasteful number, since it uses less digits than its factorization.

323680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 323680 is about 568.9288180432. The cubic root of 323680 is about 68.6602354656.

The spelling of 323680 in words is "three hundred twenty-three thousand, six hundred eighty".