6648838 has 8 divisors (see below), whose sum is σ = 11398032. Its totient is φ = 2849496.

The previous prime is 6648833. The next prime is 6648839. The reversal of 6648838 is 8388466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6648794 and 6648803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237445 + ... + 237472.

It is an arithmetic number, because the mean of its divisors is an integer number (1424754).

Almost surely, 2^6648838 is an apocalyptic number.

6648838 is a deficient number, since it is larger than the sum of its proper divisors (4749194).

6648838 is a wasteful number, since it uses less digits than its factorization.

6648838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474926.

The product of its digits is 221184, while the sum is 43.

The square root of 6648838 is about 2578.5340796662. The cubic root of 6648838 is about 188.0392818173.

The spelling of 6648838 in words is "six million, six hundred forty-eight thousand, eight hundred thirty-eight".