11646664 has 8 divisors (see below), whose sum is σ = 21837510. Its totient is φ = 5823328.

The previous prime is 11646653. The next prime is 11646673. The reversal of 11646664 is 46664611.

11646664 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., 7606564 + 4040100 = 2758^2 + 2010^2 .

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

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727909 + ... + 727924.

Almost surely, 2^11646664 is an apocalyptic number.

It is an amenable number.

11646664 is a deficient number, since it is larger than the sum of its proper divisors (10190846).

11646664 is a wasteful number, since it uses less digits than its factorization.

11646664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455839 (or 1455835 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 11646664 is about 3412.7209086006. The cubic root of 11646664 is about 226.6733773484.

The spelling of 11646664 in words is "eleven million, six hundred forty-six thousand, six hundred sixty-four".