6600550066 has 32 divisors (see below), whose sum is σ = 11088161280. Its totient is φ = 2920771200.

The previous prime is 6600550057. The next prime is 6600550069.

6600550066 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6600550066² = 87134522347545208712, which contains 22 as substring.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6600550069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424420 + ... + 439696.

It is an arithmetic number, because the mean of its divisors is an integer number (346505040).

Almost surely, 2^6600550066 is an apocalyptic number.

6600550066 is a deficient number, since it is larger than the sum of its proper divisors (4487611214).

6600550066 is a wasteful number, since it uses less digits than its factorization.

6600550066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15810.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 6600550066 is about 81243.7693980283. The cubic root of 6600550066 is about 1875.8295651012.

The spelling of 6600550066 in words is "six billion, six hundred million, five hundred fifty thousand, sixty-six".