6629378880 has 112 divisors (see below), whose sum is σ = 21091184640. Its totient is φ = 1764231168.

The previous prime is 6629378879. The next prime is 6629378927. The reversal of 6629378880 is 888739266.

It is a self number, because there is not a number n which added to its sum of digits gives 6629378880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481857 + ... + 495423.

Almost surely, 2^6629378880 is an apocalyptic number.

6629378880 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 6629378880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10545592320).

6629378880 is an abundant number, since it is smaller than the sum of its proper divisors (14461805760).

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

6629378880 is a wasteful number, since it uses less digits than its factorization.

6629378880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14096 (or 14086 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The square root of 6629378880 is about 81420.9977831272. The cubic root of 6629378880 is about 1878.5565803051.

The spelling of 6629378880 in words is "six billion, six hundred twenty-nine million, three hundred seventy-eight thousand, eight hundred eighty".