11605616 has 80 divisors (see below), whose sum is σ = 26569728. Its totient is φ = 4857600.

The previous prime is 11605591. The next prime is 11605619. The reversal of 11605616 is 61650611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11605619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190226 + ... + 190286.

Almost surely, 2^11605616 is an apocalyptic number.

11605616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11605616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13284864).

11605616 is an abundant number, since it is smaller than the sum of its proper divisors (14964112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11605616 is a wasteful number, since it uses less digits than its factorization.

11605616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 11605616 is about 3406.7016306099. The cubic root of 11605616 is about 226.4067647718.

It can be divided in two parts, 11605 and 616, that added together give a palindrome (12221).

The spelling of 11605616 in words is "eleven million, six hundred five thousand, six hundred sixteen".