11687718 has 16 divisors (see below), whose sum is σ = 26714880. Its totient is φ = 3339336.

The previous prime is 11687699. The next prime is 11687759. The reversal of 11687718 is 81778611.

11687718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×11687718³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139098 + ... + 139181.

It is an arithmetic number, because the mean of its divisors is an integer number (1669680).

Almost surely, 2^11687718 is an apocalyptic number.

11687718 is an abundant number, since it is smaller than the sum of its proper divisors (15027162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11687718 is a wasteful number, since it uses less digits than its factorization.

11687718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278291.

The product of its digits is 18816, while the sum is 39.

The square root of 11687718 is about 3418.7304661234. The cubic root of 11687718 is about 226.9394030520.

The spelling of 11687718 in words is "eleven million, six hundred eighty-seven thousand, seven hundred eighteen".