11718641 has 4 divisors (see below), whose sum is σ = 12783984. Its totient is φ = 10653300.

The previous prime is 11718631. The next prime is 11718647. The reversal of 11718641 is 14681711.

11718641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11718641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11718647) 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, 532655 + ... + 532676.

It is an arithmetic number, because the mean of its divisors is an integer number (3195996).

Almost surely, 2^11718641 is an apocalyptic number.

11718641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11718641 is a deficient number, since it is larger than the sum of its proper divisors (1065343).

11718641 is a wasteful number, since it uses less digits than its factorization.

11718641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065342.

The product of its digits is 1344, while the sum is 29.

The square root of 11718641 is about 3423.2500639013. The cubic root of 11718641 is about 227.1393698667.

The spelling of 11718641 in words is "eleven million, seven hundred eighteen thousand, six hundred forty-one".