7016809 has 2 divisors, whose sum is σ = 7016810. Its totient is φ = 7016808.

The previous prime is 7016803. The next prime is 7016831. The reversal of 7016809 is 9086107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5569600 + 1447209 = 2360^2 + 1203^2 .

It is an emirp because it is prime and its reverse (9086107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7016809 - 2⁵ = 7016777 is a prime.

It is not a weakly prime, because it can be changed into another prime (7016803) 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 as a sum of consecutive naturals, namely, 3508404 + 3508405.

It is an arithmetic number, because the mean of its divisors is an integer number (3508405).

Almost surely, 2^7016809 is an apocalyptic number.

It is an amenable number.

7016809 is a deficient number, since it is larger than the sum of its proper divisors (1).

7016809 is an equidigital number, since it uses as much as digits as its factorization.

7016809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7016809 is about 2648.9260087817. The cubic root of 7016809 is about 191.4461123591.

The spelling of 7016809 in words is "seven million, sixteen thousand, eight hundred nine".