6628680 has 48 divisors (see below), whose sum is σ = 21544380. Its totient is φ = 1767552.

The previous prime is 6628679. The next prime is 6628711. The reversal of 6628680 is 868266.

It can be written as a sum of positive squares in 2 ways, for example, as 6380676 + 248004 = 2526^2 + 498^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8847 + ... + 9566.

Almost surely, 2^6628680 is an apocalyptic number.

6628680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6628680 is an abundant number, since it is smaller than the sum of its proper divisors (14915700).

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

6628680 is a wasteful number, since it uses less digits than its factorization.

6628680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18430 (or 18423 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 6628680 is about 2574.6223023970. The cubic root of 6628680 is about 187.8490564479.

It can be divided in two parts, 66286 and 80, that added together give a palindrome (66366).

The spelling of 6628680 in words is "six million, six hundred twenty-eight thousand, six hundred eighty".