6628880 has 80 divisors (see below), whose sum is σ = 16498944. Its totient is φ = 2472960.

The previous prime is 6628879. The next prime is 6628943. The reversal of 6628880 is 888266.

It is a tau number, because it is divible by the number of its divisors (80).

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, 141017 + ... + 141063.

Almost surely, 2^6628880 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 6628880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8249472).

6628880 is an abundant number, since it is smaller than the sum of its proper divisors (9870064).

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

6628880 is a wasteful number, since it uses less digits than its factorization.

6628880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 6628880 is about 2574.6611427526. The cubic root of 6628880 is about 187.8509456845.

The spelling of 6628880 in words is "six million, six hundred twenty-eight thousand, eight hundred eighty".