565971 has 8 divisors (see below), whose sum is σ = 862464. Its totient is φ = 323400.

The previous prime is 565937. The next prime is 565973. The reversal of 565971 is 179565.

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

It is not a de Polignac number, because 565971 - 2⁶ = 565907 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

565971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (565973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13455 + ... + 13496.

It is an arithmetic number, because the mean of its divisors is an integer number (107808).

2⁵⁶⁵⁹⁷¹ is an apocalyptic number.

565971 is a deficient number, since it is larger than the sum of its proper divisors (296493).

565971 is a wasteful number, since it uses less digits than its factorization.

565971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26961.

The product of its digits is 9450, while the sum is 33.

The square root of 565971 is about 752.3104412408. The cubic root of 565971 is about 82.7176256073.

The spelling of 565971 in words is "five hundred sixty-five thousand, nine hundred seventy-one".