6640196 has 24 divisors (see below), whose sum is σ = 12536160. Its totient is φ = 3067200.

The previous prime is 6640181. The next prime is 6640213. The reversal of 6640196 is 6910466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2051 + ... + 4181.

It is an arithmetic number, because the mean of its divisors is an integer number (522340).

Almost surely, 2^6640196 is an apocalyptic number.

It is an amenable number.

6640196 is a deficient number, since it is larger than the sum of its proper divisors (5895964).

6640196 is a wasteful number, since it uses less digits than its factorization.

6640196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6640196 is about 2576.8577764401. The cubic root of 6640196 is about 187.9577768464.

The spelling of 6640196 in words is "six million, six hundred forty thousand, one hundred ninety-six".