6610221004 has 12 divisors (see below), whose sum is σ = 11570432104. Its totient is φ = 3304383264.

The previous prime is 6610221001. The next prime is 6610221041. The reversal of 6610221004 is 4001220166.

It is not an unprimeable number, because it can be changed into a prime (6610221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161097 + ... + 197920.

Almost surely, 2^6610221004 is an apocalyptic number.

It is an amenable number.

6610221004 is a deficient number, since it is larger than the sum of its proper divisors (4960211100).

6610221004 is a wasteful number, since it uses less digits than its factorization.

6610221004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363624 (or 363622 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 6610221004 is about 81303.2656416703. The cubic root of 6610221004 is about 1876.7452553865.

The spelling of 6610221004 in words is "six billion, six hundred ten million, two hundred twenty-one thousand, four".