6638422 has 16 divisors (see below), whose sum is σ = 11613600. Its totient is φ = 2844744.

The previous prime is 6638407. The next prime is 6638459. The reversal of 6638422 is 2248366.

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, 4153 + ... + 5524.

It is an arithmetic number, because the mean of its divisors is an integer number (725850).

Almost surely, 2^6638422 is an apocalyptic number.

6638422 is a deficient number, since it is larger than the sum of its proper divisors (4975178).

6638422 is an equidigital number, since it uses as much as digits as its factorization.

6638422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9700 (or 9686 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 6638422 is about 2576.5135357688. The cubic root of 6638422 is about 187.9410370396.

The spelling of 6638422 in words is "six million, six hundred thirty-eight thousand, four hundred twenty-two".