11646818 has 4 divisors (see below), whose sum is σ = 17470230. Its totient is φ = 5823408.

The previous prime is 11646799. The next prime is 11646821. The reversal of 11646818 is 81864611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81864611 = 7253 ⋅11287.

It can be written as a sum of positive squares in only one way, i.e., 9778129 + 1868689 = 3127^2 + 1367^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2911703 + ... + 2911706.

Almost surely, 2^11646818 is an apocalyptic number.

11646818 is a deficient number, since it is larger than the sum of its proper divisors (5823412).

11646818 is an equidigital number, since it uses as much as digits as its factorization.

11646818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5823411.

The product of its digits is 9216, while the sum is 35.

The square root of 11646818 is about 3412.7434711680. The cubic root of 11646818 is about 226.6743764198.

The spelling of 11646818 in words is "eleven million, six hundred forty-six thousand, eight hundred eighteen".