566006661 has 36 divisors (see below), whose sum is σ = 903637644. Its totient is φ = 341130240.

The previous prime is 566006657. The next prime is 566006669. The reversal of 566006661 is 166600665.

It can be written as a sum of positive squares in 2 ways, for example, as 183060900 + 382945761 = 13530^2 + 19569^2 .

It is not a de Polignac number, because 566006661 - 2² = 566006657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566006669) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 208831 + ... + 211523.

Almost surely, 2^566006661 is an apocalyptic number.

It is an amenable number.

566006661 is a deficient number, since it is larger than the sum of its proper divisors (337630983).

566006661 is a wasteful number, since it uses less digits than its factorization.

566006661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914 (or 2900 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 566006661 is about 23790.8944976855. The cubic root of 566006661 is about 827.1936287611.

The spelling of 566006661 in words is "five hundred sixty-six million, six thousand, six hundred sixty-one".