11421668 has 12 divisors (see below), whose sum is σ = 20047020. Its totient is φ = 5693952.

The previous prime is 11421661. The next prime is 11421673. The reversal of 11421668 is 86612411.

It can be written as a sum of positive squares in 2 ways, for example, as 1737124 + 9684544 = 1318^2 + 3112^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11421668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421661) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2633 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (1670585).

Almost surely, 2^11421668 is an apocalyptic number.

It is an amenable number.

11421668 is a deficient number, since it is larger than the sum of its proper divisors (8625352).

11421668 is a wasteful number, since it uses less digits than its factorization.

11421668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8446 (or 8444 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 11421668 is about 3379.5958338239. The cubic root of 11421668 is about 225.2042129515.

The spelling of 11421668 in words is "eleven million, four hundred twenty-one thousand, six hundred sixty-eight".