1006816709 has 2 divisors, whose sum is σ = 1006816710. Its totient is φ = 1006816708.

The previous prime is 1006816703. The next prime is 1006816711. The reversal of 1006816709 is 9076186001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896104225 + 110712484 = 29935^2 + 10522^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006816709 - 2⁸ = 1006816453 is a prime.

Together with 1006816711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006816703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503408354 + 503408355.

It is an arithmetic number, because the mean of its divisors is an integer number (503408355).

Almost surely, 2^1006816709 is an apocalyptic number.

It is an amenable number.

1006816709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006816709 is an equidigital number, since it uses as much as digits as its factorization.

1006816709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1006816709 is about 31730.3751789984. The cubic root of 1006816709 is about 1002.2670927398.

The spelling of 1006816709 in words is "one billion, six million, eight hundred sixteen thousand, seven hundred nine".