565990 has 8 divisors (see below), whose sum is σ = 1018800. Its totient is φ = 226392.

The previous prime is 565979. The next prime is 565997. The reversal of 565990 is 99565.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565997) by changing a digit.

565990 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, 28290 + ... + 28309.

It is an arithmetic number, because the mean of its divisors is an integer number (127350).

2⁵⁶⁵⁹⁹⁰ is an apocalyptic number.

565990 is a deficient number, since it is larger than the sum of its proper divisors (452810).

565990 is a wasteful number, since it uses less digits than its factorization.

565990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56606.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 565990 is about 752.3230689006. The cubic root of 565990 is about 82.7185512244.

The spelling of 565990 in words is "five hundred sixty-five thousand, nine hundred ninety".