11716905 has 8 divisors (see below), whose sum is σ = 18747072. Its totient is φ = 6249008.

The previous prime is 11716897. The next prime is 11716933. The reversal of 11716905 is 50961711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11716905 - 2³ = 11716897 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390549 + ... + 390578.

It is an arithmetic number, because the mean of its divisors is an integer number (2343384).

Almost surely, 2^11716905 is an apocalyptic number.

11716905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11716905 is a deficient number, since it is larger than the sum of its proper divisors (7030167).

11716905 is an equidigital number, since it uses as much as digits as its factorization.

11716905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781135.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 11716905 is about 3422.9964943014. The cubic root of 11716905 is about 227.1281531673.

It can be divided in two parts, 11716 and 905, that added together give a palindrome (12621).

The spelling of 11716905 in words is "eleven million, seven hundred sixteen thousand, nine hundred five".