11967688 has 8 divisors (see below), whose sum is σ = 22439430. Its totient is φ = 5983840.

The previous prime is 11967679. The next prime is 11967707. The reversal of 11967688 is 88676911.

11967688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6959044 + 5008644 = 2638^2 + 2238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747973 + ... + 747988.

Almost surely, 2^11967688 is an apocalyptic number.

It is an amenable number.

11967688 is a deficient number, since it is larger than the sum of its proper divisors (10471742).

11967688 is a wasteful number, since it uses less digits than its factorization.

11967688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495967 (or 1495963 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 11967688 is about 3459.4346358907. The cubic root of 11967688 is about 228.7371748710.

The spelling of 11967688 in words is "eleven million, nine hundred sixty-seven thousand, six hundred eighty-eight".