11604661 has 2 divisors, whose sum is σ = 11604662. Its totient is φ = 11604660.

The previous prime is 11604653. The next prime is 11604683. The reversal of 11604661 is 16640611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8964036 + 2640625 = 2994^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 11604661 - 2³ = 11604653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11604631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802330 + 5802331.

It is an arithmetic number, because the mean of its divisors is an integer number (5802331).

Almost surely, 2^11604661 is an apocalyptic number.

It is an amenable number.

11604661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11604661 is an equidigital number, since it uses as much as digits as its factorization.

11604661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 11604661 is about 3406.5614628244. The cubic root of 11604661 is about 226.4005544339.

The spelling of 11604661 in words is "eleven million, six hundred four thousand, six hundred sixty-one".