6806138 has 8 divisors (see below), whose sum is σ = 10227060. Its totient is φ = 3397120.

The previous prime is 6806119. The next prime is 6806147. The reversal of 6806138 is 8316086.

It can be written as a sum of positive squares in 2 ways, for example, as 6692569 + 113569 = 2587^2 + 337^2 .

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373 + ... + 3936.

Almost surely, 2^6806138 is an apocalyptic number.

6806138 is a deficient number, since it is larger than the sum of its proper divisors (3420922).

6806138 is a wasteful number, since it uses less digits than its factorization.

6806138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 6806138 is about 2608.8576043932. The cubic root of 6806138 is about 189.5106335537.

The spelling of 6806138 in words is "six million, eight hundred six thousand, one hundred thirty-eight".