6639146 has 16 divisors (see below), whose sum is σ = 10886400. Its totient is φ = 3023040.

The previous prime is 6639119. The next prime is 6639209. The reversal of 6639146 is 6419366.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096 + ... + 4203.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^6639146 is an apocalyptic number.

6639146 is a deficient number, since it is larger than the sum of its proper divisors (4247254).

6639146 is a wasteful number, since it uses less digits than its factorization.

6639146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349.

The product of its digits is 23328, while the sum is 35.

The square root of 6639146 is about 2576.6540318793. The cubic root of 6639146 is about 187.9478692037.

The spelling of 6639146 in words is "six million, six hundred thirty-nine thousand, one hundred forty-six".