6638454 has 12 divisors (see below), whose sum is σ = 14383356. Its totient is φ = 2212812.

The previous prime is 6638407. The next prime is 6638459. The reversal of 6638454 is 4548366.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6638459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184384 + ... + 184419.

It is an arithmetic number, because the mean of its divisors is an integer number (1198613).

Almost surely, 2^6638454 is an apocalyptic number.

6638454 is an abundant number, since it is smaller than the sum of its proper divisors (7744902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6638454 is a wasteful number, since it uses less digits than its factorization.

6638454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368811 (or 368808 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 6638454 is about 2576.5197457035. The cubic root of 6638454 is about 187.9413390242.

The spelling of 6638454 in words is "six million, six hundred thirty-eight thousand, four hundred fifty-four".