565673 has 4 divisors (see below), whose sum is σ = 569940. Its totient is φ = 561408.

The previous prime is 565667. The next prime is 565723. The reversal of 565673 is 376565.

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 322624 + 243049 = 568^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 565673 - 2¹⁸ = 303529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565603) 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, 1928 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (142485).

2⁵⁶⁵⁶⁷³ is an apocalyptic number.

It is an amenable number.

565673 is a deficient number, since it is larger than the sum of its proper divisors (4267).

565673 is a wasteful number, since it uses less digits than its factorization.

565673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266.

The product of its digits is 18900, while the sum is 32.

The square root of 565673 is about 752.1123586274. The cubic root of 565673 is about 82.7031053227.

The spelling of 565673 in words is "five hundred sixty-five thousand, six hundred seventy-three".