8680909 has 2 divisors, whose sum is σ = 8680910. Its totient is φ = 8680908.

The previous prime is 8680907. The next prime is 8680921. The reversal of 8680909 is 9090868.

It is a happy number.

8680909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7784100 + 896809 = 2790^2 + 947^2 .

It is a cyclic number.

It is not a de Polignac number, because 8680909 - 2¹ = 8680907 is a prime.

Together with 8680907, it forms a pair of twin primes.

It is a Chen prime.

8680909 is a modest number, since divided by 909 gives 868 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8680901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4340454 + 4340455.

It is an arithmetic number, because the mean of its divisors is an integer number (4340455).

Almost surely, 2^8680909 is an apocalyptic number.

It is an amenable number.

8680909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8680909 is an equidigital number, since it uses as much as digits as its factorization.

8680909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 8680909 is about 2946.3382358446. The cubic root of 8680909 is about 205.5204621637.

The spelling of 8680909 in words is "eight million, six hundred eighty thousand, nine hundred nine".