566061661 has 8 divisors (see below), whose sum is σ = 650023200. Its totient is φ = 487517040.

The previous prime is 566061649. The next prime is 566061667. The reversal of 566061661 is 166160665.

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 566061661 - 2¹⁵ = 566028893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 566061661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566061667) 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, 1354006 + ... + 1354423.

It is an arithmetic number, because the mean of its divisors is an integer number (81252900).

Almost surely, 2^566061661 is an apocalyptic number.

It is an amenable number.

566061661 is a deficient number, since it is larger than the sum of its proper divisors (83961539).

566061661 is a wasteful number, since it uses less digits than its factorization.

566061661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708459.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 566061661 is about 23792.0503740220. The cubic root of 566061661 is about 827.2204212467.

The spelling of 566061661 in words is "five hundred sixty-six million, sixty-one thousand, six hundred sixty-one".