11718656 has 26 divisors (see below), whose sum is σ = 23442642. Its totient is φ = 5857280.

The previous prime is 11718647. The next prime is 11718689. The reversal of 11718656 is 65681711.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 1478656 = 3200^2 + 1216^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666 + ... + 5526.

Almost surely, 2^11718656 is an apocalyptic number.

11718656 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 11718656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11721321).

11718656 is an abundant number, since it is smaller than the sum of its proper divisors (11723986).

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

11718656 is an frugal number, since it uses more digits than its factorization.

11718656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885 (or 2863 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 11718656 is about 3423.2522548010. The cubic root of 11718656 is about 227.1394667803.

The spelling of 11718656 in words is "eleven million, seven hundred eighteen thousand, six hundred fifty-six".