6639086 has 8 divisors (see below), whose sum is σ = 10302120. Its totient is φ = 3205048.

The previous prime is 6639077. The next prime is 6639107. The reversal of 6639086 is 6809366.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57176 + ... + 57291.

It is an arithmetic number, because the mean of its divisors is an integer number (1287765).

Almost surely, 2^6639086 is an apocalyptic number.

6639086 is a deficient number, since it is larger than the sum of its proper divisors (3663034).

6639086 is a wasteful number, since it uses less digits than its factorization.

6639086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114498.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6639086 is about 2576.6423888464. The cubic root of 6639086 is about 187.9473030211.

The spelling of 6639086 in words is "six million, six hundred thirty-nine thousand, eighty-six".