6838663 has 4 divisors (see below), whose sum is σ = 7364728. Its totient is φ = 6312600.

The previous prime is 6838633. The next prime is 6838681. The reversal of 6838663 is 3668386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3668386 = 2 ⋅1834193.

It is a cyclic number.

It is not a de Polignac number, because 6838663 - 2⁹ = 6838151 is a prime.

It is a Duffinian number.

6838663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6838603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263013 + ... + 263038.

It is an arithmetic number, because the mean of its divisors is an integer number (1841182).

Almost surely, 2^6838663 is an apocalyptic number.

6838663 is a deficient number, since it is larger than the sum of its proper divisors (526065).

6838663 is a wasteful number, since it uses less digits than its factorization.

6838663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526064.

The product of its digits is 124416, while the sum is 40.

The square root of 6838663 is about 2615.0837462689. The cubic root of 6838663 is about 189.8120301664.

The spelling of 6838663 in words is "six million, eight hundred thirty-eight thousand, six hundred sixty-three".