6650621120 has 448 divisors, whose sum is σ = 19909048320. Its totient is φ = 2081587200.

The previous prime is 6650621093. The next prime is 6650621123. The reversal of 6650621120 is 211260566.

It is a super-2 number, since 2×6650621120² = 88461522563580108800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6650621123) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 74726036 + ... + 74726124.

It is an arithmetic number, because the mean of its divisors is an integer number (44439840).

Almost surely, 2^6650621120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6650621120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9954524160).

6650621120 is an abundant number, since it is smaller than the sum of its proper divisors (13258427200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6650621120 is a wasteful number, since it uses less digits than its factorization.

6650621120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 6650621120 is about 81551.3403936441. The cubic root of 6650621120 is about 1880.5609009944.

Adding to 6650621120 its reverse (211260566), we get a palindrome (6861881686).

The spelling of 6650621120 in words is "six billion, six hundred fifty million, six hundred twenty-one thousand, one hundred twenty".