6543838 has 8 divisors (see below), whose sum is σ = 11218032. Its totient is φ = 2804496.

The previous prime is 6543833. The next prime is 6543853. The reversal of 6543838 is 8383456.

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

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 6543797 and 6543806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543833) 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, 233695 + ... + 233722.

It is an arithmetic number, because the mean of its divisors is an integer number (1402254).

Almost surely, 2^6543838 is an apocalyptic number.

6543838 is a deficient number, since it is larger than the sum of its proper divisors (4674194).

6543838 is a wasteful number, since it uses less digits than its factorization.

6543838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467426.

The product of its digits is 69120, while the sum is 37.

The square root of 6543838 is about 2558.0926488304. The cubic root of 6543838 is about 187.0441715551.

It can be divided in two parts, 6543 and 838, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 6543838 in words is "six million, five hundred forty-three thousand, eight hundred thirty-eight".