565555606664 has 8 divisors (see below), whose sum is σ = 1060416762510. Its totient is φ = 282777803328.

The previous prime is 565555606661. The next prime is 565555606687. The reversal of 565555606664 is 466606555565.

565555606664 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 only one way, i.e., 392464660900 + 173090945764 = 626470^2 + 416042^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (565555606661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35347225409 + ... + 35347225424.

Almost surely, 2^565555606664 is an apocalyptic number.

It is an amenable number.

565555606664 is a deficient number, since it is larger than the sum of its proper divisors (494861155846).

565555606664 is a wasteful number, since it uses less digits than its factorization.

565555606664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70694450839 (or 70694450835 counting only the distinct ones).

The product of its (nonzero) digits is 97200000, while the sum is 59.

The spelling of 565555606664 in words is "five hundred sixty-five billion, five hundred fifty-five million, six hundred six thousand, six hundred sixty-four".