5666565001 has 4 divisors (see below), whose sum is σ = 5999892372. Its totient is φ = 5333237632.

The previous prime is 5666564923. The next prime is 5666565007. The reversal of 5666565001 is 1005656665.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3585015625 + 2081549376 = 59875^2 + 45624^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666565001 - 2²⁷ = 5532347273 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5666565007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166663660 + ... + 166663693.

It is an arithmetic number, because the mean of its divisors is an integer number (1499973093).

Almost surely, 2^5666565001 is an apocalyptic number.

It is an amenable number.

5666565001 is a deficient number, since it is larger than the sum of its proper divisors (333327371).

5666565001 is a wasteful number, since it uses less digits than its factorization.

5666565001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333327370.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 5666565001 is about 75276.5899931712. The cubic root of 5666565001 is about 1782.8164184491.

The spelling of 5666565001 in words is "five billion, six hundred sixty-six million, five hundred sixty-five thousand, one".