11616609 has 4 divisors (see below), whose sum is σ = 15488816. Its totient is φ = 7744404.

The previous prime is 11616607. The next prime is 11616611. The reversal of 11616609 is 90661611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (11616607) and next prime (11616611).

It is not a de Polignac number, because 11616609 - 2¹ = 11616607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11616601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936099 + ... + 1936104.

It is an arithmetic number, because the mean of its divisors is an integer number (3872204).

Almost surely, 2^11616609 is an apocalyptic number.

It is an amenable number.

11616609 is a deficient number, since it is larger than the sum of its proper divisors (3872207).

11616609 is an equidigital number, since it uses as much as digits as its factorization.

11616609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872206.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 11616609 is about 3408.3146861756. The cubic root of 11616609 is about 226.4782274195.

The spelling of 11616609 in words is "eleven million, six hundred sixteen thousand, six hundred nine".