7116809 has 12 divisors (see below), whose sum is σ = 8417988. Its totient is φ = 5997600.

The previous prime is 7116799. The next prime is 7116847. The reversal of 7116809 is 9086117.

It can be written as a sum of positive squares in 2 ways, for example, as 78400 + 7038409 = 280^2 + 2653^2 .

It is not a de Polignac number, because 7116809 - 2¹² = 7112713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7116869) 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, 1799 + ... + 4179.

It is an arithmetic number, because the mean of its divisors is an integer number (701499).

Almost surely, 2^7116809 is an apocalyptic number.

It is an amenable number.

7116809 is a deficient number, since it is larger than the sum of its proper divisors (1301179).

7116809 is a wasteful number, since it uses less digits than its factorization.

7116809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456 (or 2449 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 7116809 is about 2667.7348069102. The cubic root of 7116809 is about 192.3512901071.

The spelling of 7116809 in words is "seven million, one hundred sixteen thousand, eight hundred nine".