6805538 has 8 divisors (see below), whose sum is σ = 10298988. Its totient is φ = 3372544.

The previous prime is 6805537. The next prime is 6805541. The reversal of 6805538 is 8355086.

It can be written as a sum of positive squares in 2 ways, for example, as 6775609 + 29929 = 2603^2 + 173^2 .

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 = 6805498 and 6805507.

It is not an unprimeable number, because it can be changed into a prime (6805537) 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, 14831 + ... + 15282.

Almost surely, 2^6805538 is an apocalyptic number.

6805538 is a deficient number, since it is larger than the sum of its proper divisors (3493450).

6805538 is a wasteful number, since it uses less digits than its factorization.

6805538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30228.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 6805538 is about 2608.7426089977. The cubic root of 6805538 is about 189.5050645746.

The spelling of 6805538 in words is "six million, eight hundred five thousand, five hundred thirty-eight".