6678988 has 6 divisors (see below), whose sum is σ = 11688236. Its totient is φ = 3339492.

The previous prime is 6678979. The next prime is 6679009. The reversal of 6678988 is 8898766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834870 + ... + 834877.

Almost surely, 2^6678988 is an apocalyptic number.

It is an amenable number.

6678988 is a deficient number, since it is larger than the sum of its proper divisors (5009248).

6678988 is a wasteful number, since it uses less digits than its factorization.

6678988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669751 (or 1669749 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 6678988 is about 2584.3738119707. The cubic root of 6678988 is about 188.3230826036.

The spelling of 6678988 in words is "six million, six hundred seventy-eight thousand, nine hundred eighty-eight".