6638198 has 16 divisors (see below), whose sum is σ = 11466144. Its totient is φ = 2823360.

The previous prime is 6638179. The next prime is 6638221. The reversal of 6638198 is 8918366.

It is a happy number.

It is a congruent number.

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, 188 + ... + 3648.

It is an arithmetic number, because the mean of its divisors is an integer number (716634).

Almost surely, 2^6638198 is an apocalyptic number.

6638198 is a deficient number, since it is larger than the sum of its proper divisors (4827946).

6638198 is a wasteful number, since it uses less digits than its factorization.

6638198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607.

The product of its digits is 62208, while the sum is 41.

The square root of 6638198 is about 2576.4700658071. The cubic root of 6638198 is about 187.9389231203.

The spelling of 6638198 in words is "six million, six hundred thirty-eight thousand, one hundred ninety-eight".