6815838 has 16 divisors (see below), whose sum is σ = 13723776. Its totient is φ = 2256600.

The previous prime is 6815833. The next prime is 6815839. The reversal of 6815838 is 8385186.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6815796 and 6815805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6815833) 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, 2856 + ... + 4667.

It is an arithmetic number, because the mean of its divisors is an integer number (857736).

Almost surely, 2^6815838 is an apocalyptic number.

6815838 is an abundant number, since it is smaller than the sum of its proper divisors (6907938).

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

6815838 is a wasteful number, since it uses less digits than its factorization.

6815838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679.

The product of its digits is 46080, while the sum is 39.

The square root of 6815838 is about 2610.7159937458. The cubic root of 6815838 is about 189.6006200019.

The spelling of 6815838 in words is "six million, eight hundred fifteen thousand, eight hundred thirty-eight".