11687659 has 4 divisors (see below), whose sum is σ = 11697840. Its totient is φ = 11677480.

The previous prime is 11687639. The next prime is 11687677. The reversal of 11687659 is 95678611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11687659 - 2¹⁵ = 11654891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11687629) 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, 3112 + ... + 5749.

It is an arithmetic number, because the mean of its divisors is an integer number (2924460).

Almost surely, 2^11687659 is an apocalyptic number.

11687659 is a deficient number, since it is larger than the sum of its proper divisors (10181).

11687659 is an equidigital number, since it uses as much as digits as its factorization.

11687659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180.

The product of its digits is 90720, while the sum is 43.

The square root of 11687659 is about 3418.7218371783. The cubic root of 11687659 is about 226.9390211854.

The spelling of 11687659 in words is "eleven million, six hundred eighty-seven thousand, six hundred fifty-nine".