11566687 has 8 divisors (see below), whose sum is σ = 13282560. Its totient is φ = 9961560.

The previous prime is 11566673. The next prime is 11566691. The reversal of 11566687 is 78666511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11566687 - 2¹⁵ = 11533919 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 (11561687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27463 + ... + 27880.

It is an arithmetic number, because the mean of its divisors is an integer number (1660320).

Almost surely, 2^11566687 is an apocalyptic number.

11566687 is a deficient number, since it is larger than the sum of its proper divisors (1715873).

11566687 is a wasteful number, since it uses less digits than its factorization.

11566687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55373.

The product of its digits is 60480, while the sum is 40.

The square root of 11566687 is about 3400.9832401822. The cubic root of 11566687 is about 226.1533339581.

The spelling of 11566687 in words is "eleven million, five hundred sixty-six thousand, six hundred eighty-seven".