11663687 has 8 divisors (see below), whose sum is σ = 13416096. Its totient is φ = 9932832.

The previous prime is 11663669. The next prime is 11663723. The reversal of 11663687 is 78636611.

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

It is not a de Polignac number, because 11663687 - 2¹⁴ = 11647303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11663687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663647) 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, 4208 + ... + 6405.

It is an arithmetic number, because the mean of its divisors is an integer number (1677012).

Almost surely, 2^11663687 is an apocalyptic number.

11663687 is a deficient number, since it is larger than the sum of its proper divisors (1752409).

11663687 is a wasteful number, since it uses less digits than its factorization.

11663687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10777.

The product of its digits is 36288, while the sum is 38.

The square root of 11663687 is about 3415.2140489287. The cubic root of 11663687 is about 226.7837603863.

The spelling of 11663687 in words is "eleven million, six hundred sixty-three thousand, six hundred eighty-seven".