6639484 has 12 divisors (see below), whose sum is σ = 11810008. Its totient is φ = 3265200.

The previous prime is 6639481. The next prime is 6639497. The reversal of 6639484 is 4849366.

It is a d-powerful number, because it can be written as 6⁶ + 6⁷ + 3⁹ + 9³ + 4⁵ + 8⁷ + 4¹¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6639481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13362 + ... + 13849.

Almost surely, 2^6639484 is an apocalyptic number.

It is an amenable number.

6639484 is a deficient number, since it is larger than the sum of its proper divisors (5170524).

6639484 is a wasteful number, since it uses less digits than its factorization.

6639484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27276 (or 27274 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 6639484 is about 2576.7196199820. The cubic root of 6639484 is about 187.9510586351.

The spelling of 6639484 in words is "six million, six hundred thirty-nine thousand, four hundred eighty-four".