6650990566 has 32 divisors (see below), whose sum is σ = 11034086400. Its totient is φ = 2981422080.

The previous prime is 6650990551. The next prime is 6650990579.

It is a happy number.

6650990566 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2002255 + ... + 2005573.

It is an arithmetic number, because the mean of its divisors is an integer number (344815200).

Almost surely, 2^6650990566 is an apocalyptic number.

6650990566 is a deficient number, since it is larger than the sum of its proper divisors (4383095834).

6650990566 is a wasteful number, since it uses less digits than its factorization.

6650990566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564.

The product of its (nonzero) digits is 2624400, while the sum is 52.

The square root of 6650990566 is about 81553.6054751720. The cubic root of 6650990566 is about 1880.5957224457.

The spelling of 6650990566 in words is "six billion, six hundred fifty million, nine hundred ninety thousand, five hundred sixty-six".