11670809 has 2 divisors, whose sum is σ = 11670810. Its totient is φ = 11670808.

The previous prime is 11670779. The next prime is 11670817. The reversal of 11670809 is 90807611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 2550409 = 3020^2 + 1597^2 .

It is a cyclic number.

It is not a de Polignac number, because 11670809 - 2⁸ = 11670553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11670829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5835404 + 5835405.

It is an arithmetic number, because the mean of its divisors is an integer number (5835405).

Almost surely, 2^11670809 is an apocalyptic number.

It is an amenable number.

11670809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11670809 is an equidigital number, since it uses as much as digits as its factorization.

11670809 is an evil number, because the sum of its binary digits is even.

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

The square root of 11670809 is about 3416.2565770153. The cubic root of 11670809 is about 226.8299100389.

The spelling of 11670809 in words is "eleven million, six hundred seventy thousand, eight hundred nine".