11511668 has 18 divisors (see below), whose sum is σ = 23434866. Its totient is φ = 4933488.

The previous prime is 11511623. The next prime is 11511679. The reversal of 11511668 is 86611511.

It can be written as a sum of positive squares in only one way, i.e., 11478544 + 33124 = 3388^2 + 182^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11511668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29171 + ... + 29562.

It is an arithmetic number, because the mean of its divisors is an integer number (1301937).

Almost surely, 2^11511668 is an apocalyptic number.

It is an amenable number.

11511668 is an abundant number, since it is smaller than the sum of its proper divisors (11923198).

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

11511668 is a wasteful number, since it uses less digits than its factorization.

11511668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58751 (or 58742 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 11511668 is about 3392.8849081571. The cubic root of 11511668 is about 225.7941844089.

The spelling of 11511668 in words is "eleven million, five hundred eleven thousand, six hundred sixty-eight".