565065665 has 8 divisors (see below), whose sum is σ = 696405480. Its totient is φ = 439834752.

The previous prime is 565065637. The next prime is 565065671. The reversal of 565065665 is 566560565.

565065665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 130051216 + 435014449 = 11404^2 + 20857^2 .

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 565065665 - 2¹⁸ = 564803521 is a prime.

It is a super-3 number, since 3×565065665³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527020 + ... + 1527389.

It is an arithmetic number, because the mean of its divisors is an integer number (87050685).

Almost surely, 2^565065665 is an apocalyptic number.

It is an amenable number.

565065665 is a deficient number, since it is larger than the sum of its proper divisors (131339815).

565065665 is a wasteful number, since it uses less digits than its factorization.

565065665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054451.

The product of its (nonzero) digits is 810000, while the sum is 44.

The square root of 565065665 is about 23771.1098815348. The cubic root of 565065665 is about 826.7349665177.

The spelling of 565065665 in words is "five hundred sixty-five million, sixty-five thousand, six hundred sixty-five".