6620828128 has 12 divisors (see below), whose sum is σ = 13034755440. Its totient is φ = 3310414048.

The previous prime is 6620828117. The next prime is 6620828161. The reversal of 6620828128 is 8218280266.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103450408 + ... + 103450471.

It is an arithmetic number, because the mean of its divisors is an integer number (1086229620).

Almost surely, 2^6620828128 is an apocalyptic number.

It is an amenable number.

6620828128 is a deficient number, since it is larger than the sum of its proper divisors (6413927312).

6620828128 is a wasteful number, since it uses less digits than its factorization.

6620828128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206900889 (or 206900881 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 6620828128 is about 81368.4713387194. The cubic root of 6620828128 is about 1877.7485617926.

The spelling of 6620828128 in words is "six billion, six hundred twenty million, eight hundred twenty-eight thousand, one hundred twenty-eight".