8712709 has 2 divisors, whose sum is σ = 8712710. Its totient is φ = 8712708.

The previous prime is 8712701. The next prime is 8712713. The reversal of 8712709 is 9072178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 956484 = 2785^2 + 978^2 .

It is a cyclic number.

It is not a de Polignac number, because 8712709 - 2³ = 8712701 is a prime.

It is a super-2 number, since 2×8712709² = 151822596237362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8712701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4356354 + 4356355.

It is an arithmetic number, because the mean of its divisors is an integer number (4356355).

Almost surely, 2^8712709 is an apocalyptic number.

It is an amenable number.

8712709 is a deficient number, since it is larger than the sum of its proper divisors (1).

8712709 is an equidigital number, since it uses as much as digits as its factorization.

8712709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 8712709 is about 2951.7298318105. The cubic root of 8712709 is about 205.7711112809.

The spelling of 8712709 in words is "eight million, seven hundred twelve thousand, seven hundred nine".