6620665203 has 12 divisors (see below), whose sum is σ = 9569607840. Its totient is φ = 4410811536.

The previous prime is 6620665157. The next prime is 6620665223. The reversal of 6620665203 is 3025660266.

6620665203 is a `hidden beast` number, since 6 + 620 + 6 + 6 + 5 + 20 + 3 = 666.

It is not a de Polignac number, because 6620665203 - 2¹² = 6620661107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6620665223) 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, 232923 + ... + 259796.

It is an arithmetic number, because the mean of its divisors is an integer number (797467320).

Almost surely, 2^6620665203 is an apocalyptic number.

6620665203 is a deficient number, since it is larger than the sum of its proper divisors (2948942637).

6620665203 is a wasteful number, since it uses less digits than its factorization.

6620665203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494218 (or 494215 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 6620665203 is about 81367.4701769694. The cubic root of 6620665203 is about 1877.7331591527.

The spelling of 6620665203 in words is "six billion, six hundred twenty million, six hundred sixty-five thousand, two hundred three".