320567 has 4 divisors (see below), whose sum is σ = 345240. Its totient is φ = 295896.

The previous prime is 320563. The next prime is 320591. The reversal of 320567 is 765023.

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

It is a cyclic number.

It is not a de Polignac number, because 320567 - 2² = 320563 is a prime.

It is a Duffinian number.

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 320567.

It is not an unprimeable number, because it can be changed into a prime (320561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12317 + ... + 12342.

It is an arithmetic number, because the mean of its divisors is an integer number (86310).

2³²⁰⁵⁶⁷ is an apocalyptic number.

320567 is a deficient number, since it is larger than the sum of its proper divisors (24673).

320567 is a wasteful number, since it uses less digits than its factorization.

320567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24672.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 320567 is about 566.1863650778. The cubic root of 320567 is about 68.4394122121.

The spelling of 320567 in words is "three hundred twenty thousand, five hundred sixty-seven".