6678139 has 12 divisors (see below), whose sum is σ = 7595616. Its totient is φ = 5835888.

The previous prime is 6678131. The next prime is 6678143. The reversal of 6678139 is 9318766.

It is not a de Polignac number, because 6678139 - 2³ = 6678131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6678131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3982 + ... + 5404.

It is an arithmetic number, because the mean of its divisors is an integer number (632968).

Almost surely, 2^6678139 is an apocalyptic number.

6678139 is a deficient number, since it is larger than the sum of its proper divisors (917477).

6678139 is a wasteful number, since it uses less digits than its factorization.

6678139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1455 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 6678139 is about 2584.2095503268. The cubic root of 6678139 is about 188.3151026984.

The spelling of 6678139 in words is "six million, six hundred seventy-eight thousand, one hundred thirty-nine".