565739966 has 8 divisors (see below), whose sum is σ = 925756344. Its totient is φ = 257154520.

The previous prime is 565739959. The next prime is 565739969. The reversal of 565739966 is 669937565.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565739969) 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, 12857705 + ... + 12857748.

It is an arithmetic number, because the mean of its divisors is an integer number (115719543).

Almost surely, 2^565739966 is an apocalyptic number.

565739966 is a deficient number, since it is larger than the sum of its proper divisors (360016378).

565739966 is a wasteful number, since it uses less digits than its factorization.

565739966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25715466.

The product of its digits is 9185400, while the sum is 56.

The square root of 565739966 is about 23785.2888567703. The cubic root of 565739966 is about 827.0636873791.

The spelling of 565739966 in words is "five hundred sixty-five million, seven hundred thirty-nine thousand, nine hundred sixty-six".