565556066 has 4 divisors (see below), whose sum is σ = 848334102. Its totient is φ = 282778032.

The previous prime is 565556027. The next prime is 565556083. The reversal of 565556066 is 660655565.

565556066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 295118041 + 270438025 = 17179^2 + 16445^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141389015 + ... + 141389018.

Almost surely, 2^565556066 is an apocalyptic number.

565556066 is a deficient number, since it is larger than the sum of its proper divisors (282778036).

565556066 is a wasteful number, since it uses less digits than its factorization.

565556066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282778035.

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

The square root of 565556066 is about 23781.4227076514. The cubic root of 565556066 is about 826.9740622837.

The spelling of 565556066 in words is "five hundred sixty-five million, five hundred fifty-six thousand, sixty-six".