6671439 has 12 divisors (see below), whose sum is σ = 9689472. Its totient is φ = 4423200.

The previous prime is 6671411. The next prime is 6671443. The reversal of 6671439 is 9341766.

It is not a de Polignac number, because 6671439 - 2¹² = 6667343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6671459) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 222 + ... + 3659.

It is an arithmetic number, because the mean of its divisors is an integer number (807456).

Almost surely, 2^6671439 is an apocalyptic number.

6671439 is a deficient number, since it is larger than the sum of its proper divisors (3018033).

6671439 is a wasteful number, since it uses less digits than its factorization.

6671439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078 (or 4075 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 6671439 is about 2582.9128905172. The cubic root of 6671439 is about 188.2521044404.

The spelling of 6671439 in words is "six million, six hundred seventy-one thousand, four hundred thirty-nine".