6629108220 has 144 divisors (see below), whose sum is σ = 23001101760. Its totient is φ = 1513893888.

The previous prime is 6629108209. The next prime is 6629108221. The reversal of 6629108220 is 228019266.

It is a happy number.

6629108220 is a `hidden beast` number, since 6 + 629 + 1 + 0 + 8 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629108221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2555244 + ... + 2557836.

Almost surely, 2^6629108220 is an apocalyptic number.

6629108220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6629108220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11500550880).

6629108220 is an abundant number, since it is smaller than the sum of its proper divisors (16371993540).

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

6629108220 is a wasteful number, since it uses less digits than its factorization.

6629108220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644 (or 4639 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 6629108220 is about 81419.3356642020. The cubic root of 6629108220 is about 1878.5310144588.

The spelling of 6629108220 in words is "six billion, six hundred twenty-nine million, one hundred eight thousand, two hundred twenty".