5672809 has 2 divisors, whose sum is σ = 5672810. Its totient is φ = 5672808.

The previous prime is 5672767. The next prime is 5672813. The reversal of 5672809 is 9082765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5221225 + 451584 = 2285^2 + 672^2 .

It is a cyclic number.

It is not a de Polignac number, because 5672809 - 2¹⁷ = 5541737 is a prime.

5672809 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5672869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2836404 + 2836405.

It is an arithmetic number, because the mean of its divisors is an integer number (2836405).

Almost surely, 2^5672809 is an apocalyptic number.

It is an amenable number.

5672809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5672809 is an equidigital number, since it uses as much as digits as its factorization.

5672809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 5672809 is about 2381.7659414812. The cubic root of 5672809 is about 178.3471007704.

The spelling of 5672809 in words is "five million, six hundred seventy-two thousand, eight hundred nine".