566249617 has 8 divisors (see below), whose sum is σ = 603585000. Its totient is φ = 529361664.

The previous prime is 566249611. The next prime is 566249657. The reversal of 566249617 is 716942665.

It is a Cunningham number, because it is equal to 23796²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 566249616 = 1^2 + 23796^2 .

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 566249617 - 2¹¹ = 566247569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (566249611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109242 + ... + 114307.

It is an arithmetic number, because the mean of its divisors is an integer number (75448125).

Almost surely, 2^566249617 is an apocalyptic number.

It is an amenable number.

566249617 is a deficient number, since it is larger than the sum of its proper divisors (37335383).

566249617 is a wasteful number, since it uses less digits than its factorization.

566249617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223715.

The product of its digits is 544320, while the sum is 46.

The square root of 566249617 is about 23796.0000210119. Note that the first 4 decimals coincide. The cubic root of 566249617 is about 827.3119683029.

The spelling of 566249617 in words is "five hundred sixty-six million, two hundred forty-nine thousand, six hundred seventeen".