11687005 has 16 divisors (see below), whose sum is σ = 15715584. Its totient is φ = 8268480.

The previous prime is 11686999. The next prime is 11687057. The reversal of 11687005 is 50078611.

It is a happy number.

11687005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11687005 - 2¹¹ = 11684957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837 + ... + 4906.

It is an arithmetic number, because the mean of its divisors is an integer number (982224).

Almost surely, 2^11687005 is an apocalyptic number.

It is an amenable number.

11687005 is a deficient number, since it is larger than the sum of its proper divisors (4028579).

11687005 is a wasteful number, since it uses less digits than its factorization.

11687005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5796.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 11687005 is about 3418.6261860578. The cubic root of 11687005 is about 226.9347882052.

The spelling of 11687005 in words is "eleven million, six hundred eighty-seven thousand, five".