11557685 has 4 divisors (see below), whose sum is σ = 13869228. Its totient is φ = 9246144.

The previous prime is 11557673. The next prime is 11557697. The reversal of 11557685 is 58675511.

It is a happy number.

11557685 is digitally balanced in base 2 and base 3, because in such bases 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 an emirpimes, since its reverse is a distinct semiprime: 58675511 = 373 ⋅157307.

It is an interprime number because it is at equal distance from previous prime (11557673) and next prime (11557697).

It can be written as a sum of positive squares in 2 ways, for example, as 1779556 + 9778129 = 1334^2 + 3127^2 .

It is a cyclic number.

It is not a de Polignac number, because 11557685 - 2¹² = 11553589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155764 + ... + 1155773.

It is an arithmetic number, because the mean of its divisors is an integer number (3467307).

Almost surely, 2^11557685 is an apocalyptic number.

It is an amenable number.

11557685 is a deficient number, since it is larger than the sum of its proper divisors (2311543).

11557685 is an equidigital number, since it uses as much as digits as its factorization.

11557685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311542.

The product of its digits is 42000, while the sum is 38.

The square root of 11557685 is about 3399.6595417777. The cubic root of 11557685 is about 226.0946493154.

The spelling of 11557685 in words is "eleven million, five hundred fifty-seven thousand, six hundred eighty-five".