11381647 has 2 divisors, whose sum is σ = 11381648. Its totient is φ = 11381646.

The previous prime is 11381633. The next prime is 11381693. The reversal of 11381647 is 74618311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11381647 - 2¹⁵ = 11348879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11381147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5690823 + 5690824.

It is an arithmetic number, because the mean of its divisors is an integer number (5690824).

Almost surely, 2^11381647 is an apocalyptic number.

11381647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11381647 is an equidigital number, since it uses as much as digits as its factorization.

11381647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 11381647 is about 3373.6696637341. The cubic root of 11381647 is about 224.9408700587.

Adding to 11381647 its reverse (74618311), we get a palindrome (85999958).

The spelling of 11381647 in words is "eleven million, three hundred eighty-one thousand, six hundred forty-seven".