11661326 has 8 divisors (see below), whose sum is σ = 18412680. Its totient is φ = 5523768.

The previous prime is 11661323. The next prime is 11661347. The reversal of 11661326 is 62316611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11661295 and 11661304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661323) 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 3 ways as a sum of consecutive naturals, for example, 153401 + ... + 153476.

It is an arithmetic number, because the mean of its divisors is an integer number (2301585).

Almost surely, 2^11661326 is an apocalyptic number.

11661326 is a deficient number, since it is larger than the sum of its proper divisors (6751354).

11661326 is a wasteful number, since it uses less digits than its factorization.

11661326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306898.

The product of its digits is 1296, while the sum is 26.

The square root of 11661326 is about 3414.8683722803. The cubic root of 11661326 is about 226.7684572611.

Adding to 11661326 its reverse (62316611), we get a palindrome (73977937).

The spelling of 11661326 in words is "eleven million, six hundred sixty-one thousand, three hundred twenty-six".