11660644 has 6 divisors (see below), whose sum is σ = 20406134. Its totient is φ = 5830320.

The previous prime is 11660641. The next prime is 11660647. The reversal of 11660644 is 44606611.

It is an interprime number because it is at equal distance from previous prime (11660641) and next prime (11660647).

It can be written as a sum of positive squares in only one way, i.e., 11142244 + 518400 = 3338^2 + 720^2 .

It is not an unprimeable number, because it can be changed into a prime (11660641) 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 as a sum of consecutive naturals, namely, 1457577 + ... + 1457584.

Almost surely, 2^11660644 is an apocalyptic number.

It is an amenable number.

11660644 is a deficient number, since it is larger than the sum of its proper divisors (8745490).

11660644 is a wasteful number, since it uses less digits than its factorization.

11660644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915165 (or 2915163 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 11660644 is about 3414.7685133842. The cubic root of 11660644 is about 226.7640364058.

The spelling of 11660644 in words is "eleven million, six hundred sixty thousand, six hundred forty-four".