1600566666 has 16 divisors (see below), whose sum is σ = 3311517600. Its totient is φ = 515124848.

The previous prime is 1600566647. The next prime is 1600566697. The reversal of 1600566666 is 6666650061.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4599156 + ... + 4599503.

It is an arithmetic number, because the mean of its divisors is an integer number (206969850).

Almost surely, 2^1600566666 is an apocalyptic number.

1600566666 is an abundant number, since it is smaller than the sum of its proper divisors (1710950934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1600566666 is a wasteful number, since it uses less digits than its factorization.

1600566666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198693.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 1600566666 is about 40007.0826979424. The cubic root of 1600566666 is about 1169.7451574404.

The spelling of 1600566666 in words is "one billion, six hundred million, five hundred sixty-six thousand, six hundred sixty-six".