565801 has 8 divisors (see below), whose sum is σ = 603680. Its totient is φ = 528768.

The previous prime is 565793. The next prime is 565813. The reversal of 565801 is 108565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 565801 - 2³ = 565793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565891) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1690 + ... + 1996.

It is an arithmetic number, because the mean of its divisors is an integer number (75460).

2⁵⁶⁵⁸⁰¹ is an apocalyptic number.

It is an amenable number.

565801 is a deficient number, since it is larger than the sum of its proper divisors (37879).

565801 is a wasteful number, since it uses less digits than its factorization.

565801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 565801 is about 752.1974474830. The cubic root of 565801 is about 82.7093428481.

The spelling of 565801 in words is "five hundred sixty-five thousand, eight hundred one".