11521668 has 12 divisors (see below), whose sum is σ = 26883920. Its totient is φ = 3840552.

The previous prime is 11521661. The next prime is 11521687. The reversal of 11521668 is 86612511.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (11521661) 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, 480058 + ... + 480081.

Almost surely, 2^11521668 is an apocalyptic number.

It is an amenable number.

11521668 is an abundant number, since it is smaller than the sum of its proper divisors (15362252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11521668 is a wasteful number, since it uses less digits than its factorization.

11521668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960146 (or 960144 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 11521668 is about 3394.3582604080. The cubic root of 11521668 is about 225.8595467394.

The spelling of 11521668 in words is "eleven million, five hundred twenty-one thousand, six hundred sixty-eight".