11437661 has 2 divisors, whose sum is σ = 11437662. Its totient is φ = 11437660.

The previous prime is 11437627. The next prime is 11437691. The reversal of 11437661 is 16673411.

11437661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6175225 + 5262436 = 2485^2 + 2294^2 .

It is a cyclic number.

It is not a de Polignac number, because 11437661 - 2⁶ = 11437597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11437691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5718830 + 5718831.

It is an arithmetic number, because the mean of its divisors is an integer number (5718831).

Almost surely, 2^11437661 is an apocalyptic number.

It is an amenable number.

11437661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11437661 is an equidigital number, since it uses as much as digits as its factorization.

11437661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 11437661 is about 3381.9611174583. The cubic root of 11437661 is about 225.3092767424.

The spelling of 11437661 in words is "eleven million, four hundred thirty-seven thousand, six hundred sixty-one".