11538647 has 2 divisors, whose sum is σ = 11538648. Its totient is φ = 11538646.

The previous prime is 11538629. The next prime is 11538649. The reversal of 11538647 is 74683511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11538647 - 2¹⁴ = 11522263 is a prime.

Together with 11538649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11538649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5769323 + 5769324.

It is an arithmetic number, because the mean of its divisors is an integer number (5769324).

Almost surely, 2^11538647 is an apocalyptic number.

11538647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11538647 is an equidigital number, since it uses as much as digits as its factorization.

11538647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 11538647 is about 3396.8584015234. The cubic root of 11538647 is about 225.9704388725.

The spelling of 11538647 in words is "eleven million, five hundred thirty-eight thousand, six hundred forty-seven".