11538687 has 4 divisors (see below), whose sum is σ = 15384920. Its totient is φ = 7692456.

The previous prime is 11538679. The next prime is 11538691. The reversal of 11538687 is 78683511.

11538687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11538687 - 2³ = 11538679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11538647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1923112 + ... + 1923117.

It is an arithmetic number, because the mean of its divisors is an integer number (3846230).

Almost surely, 2^11538687 is an apocalyptic number.

11538687 is a deficient number, since it is larger than the sum of its proper divisors (3846233).

11538687 is an equidigital number, since it uses as much as digits as its factorization.

11538687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846232.

The product of its digits is 40320, while the sum is 39.

The square root of 11538687 is about 3396.8642893115. The cubic root of 11538687 is about 225.9706999894.

The spelling of 11538687 in words is "eleven million, five hundred thirty-eight thousand, six hundred eighty-seven".