6601661066 has 128 divisors (see below), whose sum is σ = 13948526592. Its totient is φ = 2258784000.

The previous prime is 6601661047. The next prime is 6601661111.

6601661066 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14320076 + ... + 14320536.

It is an arithmetic number, because the mean of its divisors is an integer number (108972864).

Almost surely, 2^6601661066 is an apocalyptic number.

6601661066 is an abundant number, since it is smaller than the sum of its proper divisors (7346865526).

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

6601661066 is a wasteful number, since it uses less digits than its factorization.

6601661066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6601661066 is about 81250.6065577359. The cubic root of 6601661066 is about 1875.9348053063.

The spelling of 6601661066 in words is "six billion, six hundred one million, six hundred sixty-one thousand, sixty-six".