6600642003 has 12 divisors (see below), whose sum is σ = 10095099768. Its totient is φ = 4141579200.

The previous prime is 6600641989. The next prime is 6600642007. The reversal of 6600642003 is 3002460066.

It is not a de Polignac number, because 6600642003 - 2⁶ = 6600641939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6600642007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21570573 + ... + 21570878.

It is an arithmetic number, because the mean of its divisors is an integer number (841258314).

Almost surely, 2^6600642003 is an apocalyptic number.

6600642003 is a deficient number, since it is larger than the sum of its proper divisors (3494457765).

6600642003 is a wasteful number, since it uses less digits than its factorization.

6600642003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43141474 (or 43141471 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 6600642003 is about 81244.3352056006. The cubic root of 6600642003 is about 1875.8382743421.

The spelling of 6600642003 in words is "six billion, six hundred million, six hundred forty-two thousand, three".