6620020055 has 8 divisors (see below), whose sum is σ = 8666208144. Its totient is φ = 4814560000.

The previous prime is 6620020007. The next prime is 6620020073. The reversal of 6620020055 is 5500200266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6620020055 - 2²² = 6615825751 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 60181946 + ... + 60182055.

It is an arithmetic number, because the mean of its divisors is an integer number (1083276018).

Almost surely, 2^6620020055 is an apocalyptic number.

6620020055 is a deficient number, since it is larger than the sum of its proper divisors (2046188089).

6620020055 is a wasteful number, since it uses less digits than its factorization.

6620020055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120364017.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 6620020055 is about 81363.5056705400. The cubic root of 6620020055 is about 1877.6721655262.

The spelling of 6620020055 in words is "six billion, six hundred twenty million, twenty thousand, fifty-five".