11706557 has 4 divisors (see below), whose sum is σ = 12395196. Its totient is φ = 11017920.

The previous prime is 11706529. The next prime is 11706559. The reversal of 11706557 is 75560711.

11706557 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 75560711 = 619 ⋅122069.

It can be written as a sum of positive squares in 2 ways, for example, as 5285401 + 6421156 = 2299^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 11706557 - 2⁸ = 11706301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11706559) 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, 344294 + ... + 344327.

It is an arithmetic number, because the mean of its divisors is an integer number (3098799).

Almost surely, 2^11706557 is an apocalyptic number.

11706557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11706557 is a deficient number, since it is larger than the sum of its proper divisors (688639).

11706557 is an equidigital number, since it uses as much as digits as its factorization.

11706557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688638.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 11706557 is about 3421.4846192844. The cubic root of 11706557 is about 227.0612693392.

The spelling of 11706557 in words is "eleven million, seven hundred six thousand, five hundred fifty-seven".