6688320 has 56 divisors (see below), whose sum is σ = 21238464. Its totient is φ = 1783296.

The previous prime is 6688313. The next prime is 6688337. The reversal of 6688320 is 238866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2524 + ... + 4443.

Almost surely, 2^6688320 is an apocalyptic number.

6688320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6688320 is an abundant number, since it is smaller than the sum of its proper divisors (14550144).

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

6688320 is a wasteful number, since it uses less digits than its factorization.

6688320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6987 (or 6977 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 6688320 is about 2586.1786481216. The cubic root of 6688320 is about 188.4107512312.

The spelling of 6688320 in words is "six million, six hundred eighty-eight thousand, three hundred twenty".