6639170 has 32 divisors (see below), whose sum is σ = 12761280. Its totient is φ = 2479680.

The previous prime is 6639119. The next prime is 6639209. The reversal of 6639170 is 719366.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15560 + ... + 15980.

It is an arithmetic number, because the mean of its divisors is an integer number (398790).

Almost surely, 2^6639170 is an apocalyptic number.

6639170 is a deficient number, since it is larger than the sum of its proper divisors (6122110).

6639170 is a wasteful number, since it uses less digits than its factorization.

6639170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 6639170 is about 2576.6586890778. The cubic root of 6639170 is about 187.9480956757.

Subtracting from 6639170 its product of nonzero digits (6804), we obtain a palindrome (6632366).

The spelling of 6639170 in words is "six million, six hundred thirty-nine thousand, one hundred seventy".