6816293 has 6 divisors (see below), whose sum is σ = 7492422. Its totient is φ = 6196520.

The previous prime is 6816281. The next prime is 6816301. The reversal of 6816293 is 3926186.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 2982529 = 1958^2 + 1727^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6816293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6816233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28046 + ... + 28287.

It is an arithmetic number, because the mean of its divisors is an integer number (1248737).

Almost surely, 2^6816293 is an apocalyptic number.

It is an amenable number.

6816293 is a deficient number, since it is larger than the sum of its proper divisors (676129).

6816293 is a wasteful number, since it uses less digits than its factorization.

6816293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56355 (or 56344 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 6816293 is about 2610.8031331374. The cubic root of 6816293 is about 189.6048389188.

It can be divided in two parts, 68 and 16293, that added together give a palindrome (16361).

The spelling of 6816293 in words is "six million, eight hundred sixteen thousand, two hundred ninety-three".