11518687 has 2 divisors, whose sum is σ = 11518688. Its totient is φ = 11518686.

The previous prime is 11518681. The next prime is 11518697. The reversal of 11518687 is 78681511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11518687 - 2¹⁵ = 11485919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11518681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5759343 + 5759344.

It is an arithmetic number, because the mean of its divisors is an integer number (5759344).

Almost surely, 2^11518687 is an apocalyptic number.

11518687 is a deficient number, since it is larger than the sum of its proper divisors (1).

11518687 is an equidigital number, since it uses as much as digits as its factorization.

11518687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 37.

The square root of 11518687 is about 3393.9191210163. The cubic root of 11518687 is about 225.8400661866.

The spelling of 11518687 in words is "eleven million, five hundred eighteen thousand, six hundred eighty-seven".