5673809 has 4 divisors (see below), whose sum is σ = 5780916. Its totient is φ = 5566704.

The previous prime is 5673781. The next prime is 5673827. The reversal of 5673809 is 9083765.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4293184 + 1380625 = 2072^2 + 1175^2 .

It is a cyclic number.

It is not a de Polignac number, because 5673809 - 2²⁰ = 4625233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5672809) 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, 53474 + ... + 53579.

It is an arithmetic number, because the mean of its divisors is an integer number (1445229).

Almost surely, 2^5673809 is an apocalyptic number.

It is an amenable number.

5673809 is a deficient number, since it is larger than the sum of its proper divisors (107107).

5673809 is a wasteful number, since it uses less digits than its factorization.

5673809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107106.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 5673809 is about 2381.9758604990. The cubic root of 5673809 is about 178.3575798013.

The spelling of 5673809 in words is "five million, six hundred seventy-three thousand, eight hundred nine".