11686198 has 4 divisors (see below), whose sum is σ = 17529300. Its totient is φ = 5843098.

The previous prime is 11686193. The next prime is 11686201. The reversal of 11686198 is 89168611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89168611 = 7 ⋅12738373.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 11686198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11686193) 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 as a sum of consecutive naturals, namely, 2921548 + ... + 2921551.

It is an arithmetic number, because the mean of its divisors is an integer number (4382325).

Almost surely, 2^11686198 is an apocalyptic number.

11686198 is a deficient number, since it is larger than the sum of its proper divisors (5843102).

11686198 is an equidigital number, since it uses as much as digits as its factorization.

11686198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843101.

The product of its digits is 20736, while the sum is 40.

The square root of 11686198 is about 3418.5081541515. The cubic root of 11686198 is about 226.9295647229.

The spelling of 11686198 in words is "eleven million, six hundred eighty-six thousand, one hundred ninety-eight".