11609665 has 8 divisors (see below), whose sum is σ = 14664960. Its totient is φ = 8798832.

The previous prime is 11609659. The next prime is 11609669. The reversal of 11609665 is 56690611.

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

It is a cyclic number.

It is not a de Polignac number, because 11609665 - 2⁷ = 11609537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11609665.

It is not an unprimeable number, because it can be changed into a prime (11609669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61009 + ... + 61198.

It is an arithmetic number, because the mean of its divisors is an integer number (1833120).

Almost surely, 2^11609665 is an apocalyptic number.

It is an amenable number.

11609665 is a deficient number, since it is larger than the sum of its proper divisors (3055295).

11609665 is a wasteful number, since it uses less digits than its factorization.

11609665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122231.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 11609665 is about 3407.2958486166. The cubic root of 11609665 is about 226.4330915204.

The spelling of 11609665 in words is "eleven million, six hundred nine thousand, six hundred sixty-five".