9705709 has 8 divisors (see below), whose sum is σ = 10479672. Its totient is φ = 8935680.

The previous prime is 9705671. The next prime is 9705719. The reversal of 9705709 is 9075079.

It can be written as a sum of positive squares in 4 ways, for example, as 675684 + 9030025 = 822^2 + 3005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9705709 - 2¹⁵ = 9672941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9705719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6057 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (1309959).

Almost surely, 2^9705709 is an apocalyptic number.

It is an amenable number.

9705709 is a deficient number, since it is larger than the sum of its proper divisors (773963).

9705709 is a wasteful number, since it uses less digits than its factorization.

9705709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its (nonzero) digits is 19845, while the sum is 37.

The square root of 9705709 is about 3115.3986903766. The cubic root of 9705709 is about 213.3089552764.

The spelling of 9705709 in words is "nine million, seven hundred five thousand, seven hundred nine".