320680 has 16 divisors (see below), whose sum is σ = 721620. Its totient is φ = 128256.

The previous prime is 320669. The next prime is 320687. The reversal of 320680 is 86023.

320680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 320356 + 324 = 566^2 + 18^2 .

It is not an unprimeable number, because it can be changed into a prime (320687) by changing a digit.

320680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3969 + ... + 4048.

2³²⁰⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

320680 is an abundant number, since it is smaller than the sum of its proper divisors (400940).

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

320680 is a wasteful number, since it uses less digits than its factorization.

320680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8028 (or 8024 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 320680 is about 566.2861467492. The cubic root of 320680 is about 68.4474529077.

It can be divided in two parts, 320 and 680, that added together give a cube (1000 = 10³).

The spelling of 320680 in words is "three hundred twenty thousand, six hundred eighty".