6814809 has 6 divisors (see below), whose sum is σ = 9843626. Its totient is φ = 4543200.

The previous prime is 6814783. The next prime is 6814849. The reversal of 6814809 is 9084186.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5774409 + 1040400 = 2403^2 + 1020^2 .

It is not a de Polignac number, because 6814809 - 2⁸ = 6814553 is a prime.

It is a Duffinian number.

It is a Curzon number.

6814809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6814849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 378592 + ... + 378609.

Almost surely, 2^6814809 is an apocalyptic number.

It is an amenable number.

6814809 is a deficient number, since it is larger than the sum of its proper divisors (3028817).

6814809 is a wasteful number, since it uses less digits than its factorization.

6814809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757207 (or 757204 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 6814809 is about 2610.5189139326. The cubic root of 6814809 is about 189.5910780665.

The spelling of 6814809 in words is "six million, eight hundred fourteen thousand, eight hundred nine".