6606221072 has 20 divisors (see below), whose sum is σ = 13963149456. Its totient is φ = 3002827680.

The previous prime is 6606221071. The next prime is 6606221087. The reversal of 6606221072 is 2701226066.

It is not an unprimeable number, because it can be changed into a prime (6606221071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18767498 + ... + 18767849.

Almost surely, 2^6606221072 is an apocalyptic number.

It is an amenable number.

6606221072 is an abundant number, since it is smaller than the sum of its proper divisors (7356928384).

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

6606221072 is a wasteful number, since it uses less digits than its factorization.

6606221072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37535366 (or 37535360 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 6606221072 is about 81278.6630795561. The cubic root of 6606221072 is about 1876.3666312289.

The spelling of 6606221072 in words is "six billion, six hundred six million, two hundred twenty-one thousand, seventy-two".