6815493 has 12 divisors (see below), whose sum is σ = 10184460. Its totient is φ = 4386816.

The previous prime is 6815491. The next prime is 6815507. The reversal of 6815493 is 3945186.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 2883204 = 1983^2 + 1698^2 .

It is not a de Polignac number, because 6815493 - 2¹ = 6815491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6815491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12796 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (848705).

Almost surely, 2^6815493 is an apocalyptic number.

It is an amenable number.

6815493 is a deficient number, since it is larger than the sum of its proper divisors (3368967).

6815493 is a wasteful number, since it uses less digits than its factorization.

6815493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26148 (or 26145 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 6815493 is about 2610.6499190815. The cubic root of 6815493 is about 189.5974209178.

The spelling of 6815493 in words is "six million, eight hundred fifteen thousand, four hundred ninety-three".