11557705 has 16 divisors (see below), whose sum is σ = 14774400. Its totient is φ = 8649472.

The previous prime is 11557703. The next prime is 11557717. The reversal of 11557705 is 50775511.

11557705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11557705 - 2¹ = 11557703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11557703) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18996 + ... + 19594.

It is an arithmetic number, because the mean of its divisors is an integer number (923400).

Almost surely, 2^11557705 is an apocalyptic number.

It is an amenable number.

11557705 is a deficient number, since it is larger than the sum of its proper divisors (3216695).

11557705 is a wasteful number, since it uses less digits than its factorization.

11557705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 6125, while the sum is 31.

The square root of 11557705 is about 3399.6624832474. The cubic root of 11557705 is about 226.0947797305.

The spelling of 11557705 in words is "eleven million, five hundred fifty-seven thousand, seven hundred five".