565820061 has 8 divisors (see below), whose sum is σ = 798804864. Its totient is φ = 355024320.

The previous prime is 565820011. The next prime is 565820063. The reversal of 565820061 is 160028565.

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

It is not a de Polignac number, because 565820061 - 2¹⁸ = 565557917 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.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565820063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5547205 + ... + 5547306.

It is an arithmetic number, because the mean of its divisors is an integer number (99850608).

Almost surely, 2^565820061 is an apocalyptic number.

565820061 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

565820061 is a deficient number, since it is larger than the sum of its proper divisors (232984803).

565820061 is a wasteful number, since it uses less digits than its factorization.

565820061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11094531.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 565820061 is about 23786.9725059748. The cubic root of 565820061 is about 827.1027162287.

The spelling of 565820061 in words is "five hundred sixty-five million, eight hundred twenty thousand, sixty-one".