568321 has 4 divisors (see below), whose sum is σ = 612052. Its totient is φ = 524592.

The previous prime is 568303. The next prime is 568349. The reversal of 568321 is 123865.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 378225 + 190096 = 615^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 568321 - 2⁵ = 568289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (568391) 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, 21846 + ... + 21871.

It is an arithmetic number, because the mean of its divisors is an integer number (153013).

It is a Proth number, since it is equal to 555 ⋅ 2¹⁰ + 1 and 555 < 2¹⁰.

2⁵⁶⁸³²¹ is an apocalyptic number.

It is an amenable number.

568321 is a deficient number, since it is larger than the sum of its proper divisors (43731).

568321 is a wasteful number, since it uses less digits than its factorization.

568321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43730.

The product of its digits is 1440, while the sum is 25.

The square root of 568321 is about 753.8706785650. The cubic root of 568321 is about 82.8319530187.

The spelling of 568321 in words is "five hundred sixty-eight thousand, three hundred twenty-one".