11707709 has 4 divisors (see below), whose sum is σ = 12608316. Its totient is φ = 10807104.

The previous prime is 11707693. The next prime is 11707711. The reversal of 11707709 is 90770711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90770711 = 457 ⋅198623.

It can be written as a sum of positive squares in 2 ways, for example, as 2839225 + 8868484 = 1685^2 + 2978^2 .

It is a cyclic number.

It is not a de Polignac number, because 11707709 - 2⁴ = 11707693 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 (11707769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450284 + ... + 450309.

It is an arithmetic number, because the mean of its divisors is an integer number (3152079).

Almost surely, 2^11707709 is an apocalyptic number.

It is an amenable number.

11707709 is a deficient number, since it is larger than the sum of its proper divisors (900607).

11707709 is an equidigital number, since it uses as much as digits as its factorization.

11707709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900606.

The product of its (nonzero) digits is 3087, while the sum is 32.

The square root of 11707709 is about 3421.6529631159. The cubic root of 11707709 is about 227.0687171881.

The spelling of 11707709 in words is "eleven million, seven hundred seven thousand, seven hundred nine".