11609663 has 4 divisors (see below), whose sum is σ = 12502728. Its totient is φ = 10716600.

The previous prime is 11609659. The next prime is 11609669. The reversal of 11609663 is 36690611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11609663 - 2² = 11609659 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 (11609669) 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, 446513 + ... + 446538.

It is an arithmetic number, because the mean of its divisors is an integer number (3125682).

Almost surely, 2^11609663 is an apocalyptic number.

11609663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11609663 is a deficient number, since it is larger than the sum of its proper divisors (893065).

11609663 is an equidigital number, since it uses as much as digits as its factorization.

11609663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893064.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 11609663 is about 3407.2955551287. The cubic root of 11609663 is about 226.4330785178.

The spelling of 11609663 in words is "eleven million, six hundred nine thousand, six hundred sixty-three".