6620205212 has 24 divisors (see below), whose sum is σ = 12474771120. Its totient is φ = 3062585600.

The previous prime is 6620205203. The next prime is 6620205233. The reversal of 6620205212 is 2125020266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821039 + ... + 829062.

It is an arithmetic number, because the mean of its divisors is an integer number (519782130).

Almost surely, 2^6620205212 is an apocalyptic number.

It is an amenable number.

6620205212 is a deficient number, since it is larger than the sum of its proper divisors (5854565908).

6620205212 is a wasteful number, since it uses less digits than its factorization.

6620205212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650181 (or 1650179 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6620205212 is about 81364.6435007246. The cubic root of 6620205212 is about 1877.6896710574.

Adding to 6620205212 its reverse (2125020266), we get a palindrome (8745225478).

The spelling of 6620205212 in words is "six billion, six hundred twenty million, two hundred five thousand, two hundred twelve".