6668238 has 16 divisors (see below), whose sum is σ = 13375440. Its totient is φ = 2216256.

The previous prime is 6668237. The next prime is 6668257. The reversal of 6668238 is 8328666.

It is a junction number, because it is equal to n+sod(n) for n = 6668196 and 6668205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906 + ... + 3762.

It is an arithmetic number, because the mean of its divisors is an integer number (835965).

Almost surely, 2^6668238 is an apocalyptic number.

6668238 is an abundant number, since it is smaller than the sum of its proper divisors (6707202).

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

6668238 is a wasteful number, since it uses less digits than its factorization.

6668238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251.

The product of its digits is 82944, while the sum is 39.

The square root of 6668238 is about 2582.2931669352. The cubic root of 6668238 is about 188.2219914274.

The spelling of 6668238 in words is "six million, six hundred sixty-eight thousand, two hundred thirty-eight".