5666000066 has 8 divisors (see below), whose sum is σ = 8501419020. Its totient is φ = 2832193728.

The previous prime is 5666000059. The next prime is 5666000083. The reversal of 5666000066 is 6600006665.

It can be written as a sum of positive squares in 2 ways, for example, as 4003725625 + 1662274441 = 63275^2 + 40771^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394331 + ... + 408446.

Almost surely, 2^5666000066 is an apocalyptic number.

5666000066 is a deficient number, since it is larger than the sum of its proper divisors (2835418954).

5666000066 is a wasteful number, since it uses less digits than its factorization.

5666000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806308.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 5666000066 is about 75272.8375046404. The cubic root of 5666000066 is about 1782.7571698058.

The spelling of 5666000066 in words is "five billion, six hundred sixty-six million, sixty-six", and thus it is an aban number.