5666072066 has 8 divisors (see below), whose sum is σ = 8512369164. Its totient is φ = 2828615680.

The previous prime is 5666072063. The next prime is 5666072077. The reversal of 5666072066 is 6602706665.

It can be written as a sum of positive squares in 2 ways, for example, as 4995521041 + 670551025 = 70679^2 + 25895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5666072063) 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, 2208575 + ... + 2211138.

Almost surely, 2^5666072066 is an apocalyptic number.

5666072066 is a deficient number, since it is larger than the sum of its proper divisors (2846297098).

5666072066 is a wasteful number, since it uses less digits than its factorization.

5666072066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420356.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 5666072066 is about 75273.3157632902. The cubic root of 5666072066 is about 1782.7647211631.

The spelling of 5666072066 in words is "five billion, six hundred sixty-six million, seventy-two thousand, sixty-six".