11661347 has 2 divisors, whose sum is σ = 11661348. Its totient is φ = 11661346.

The previous prime is 11661323. The next prime is 11661361. The reversal of 11661347 is 74316611.

11661347 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 is a cyclic number.

It is not a de Polignac number, because 11661347 - 2¹⁸ = 11399203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11661317) 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, 5830673 + 5830674.

It is an arithmetic number, because the mean of its divisors is an integer number (5830674).

Almost surely, 2^11661347 is an apocalyptic number.

11661347 is a deficient number, since it is larger than the sum of its proper divisors (1).

11661347 is an equidigital number, since it uses as much as digits as its factorization.

11661347 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 11661347 is about 3414.8714470680. The cubic root of 11661347 is about 226.7685933844.

Adding to 11661347 its reverse (74316611), we get a palindrome (85977958).

The spelling of 11661347 in words is "eleven million, six hundred sixty-one thousand, three hundred forty-seven".