6620628207 has 4 divisors (see below), whose sum is σ = 8827504280. Its totient is φ = 4413752136.

The previous prime is 6620628199. The next prime is 6620628227. The reversal of 6620628207 is 7028260266.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6620628207 - 2³ = 6620628199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620628227) 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 3 ways as a sum of consecutive naturals, for example, 1103438032 + ... + 1103438037.

It is an arithmetic number, because the mean of its divisors is an integer number (2206876070).

Almost surely, 2^6620628207 is an apocalyptic number.

6620628207 is a deficient number, since it is larger than the sum of its proper divisors (2206876073).

6620628207 is a wasteful number, since it uses less digits than its factorization.

6620628207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206876072.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 6620628207 is about 81367.2428376432. The cubic root of 6620628207 is about 1877.7296615814.

The spelling of 6620628207 in words is "six billion, six hundred twenty million, six hundred twenty-eight thousand, two hundred seven".