6669879216 has 320 divisors, whose sum is σ = 23615155200. Its totient is φ = 1598607360.

The previous prime is 6669879179. The next prime is 6669879217. The reversal of 6669879216 is 6129789666.

It is a self number, because there is not a number n which added to its sum of digits gives 6669879216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669879217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2352936 + ... + 2355768.

It is an arithmetic number, because the mean of its divisors is an integer number (73797360).

Almost surely, 2^6669879216 is an apocalyptic number.

6669879216 is a gapful number since it is divisible by the number (66) 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 6669879216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11807577600).

6669879216 is an abundant number, since it is smaller than the sum of its proper divisors (16945275984).

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

6669879216 is a wasteful number, since it uses less digits than its factorization.

6669879216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2869 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 60.

The square root of 6669879216 is about 81669.3284899539. The cubic root of 6669879216 is about 1882.3743216821.

The spelling of 6669879216 in words is "six billion, six hundred sixty-nine million, eight hundred seventy-nine thousand, two hundred sixteen".