11987716 has 24 divisors (see below), whose sum is σ = 22702680. Its totient is φ = 5505792.

The previous prime is 11987687. The next prime is 11987719. The reversal of 11987716 is 61778911.

11987716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 11560000 = 654^2 + 3400^2 .

It is not an unprimeable number, because it can be changed into a prime (11987719) 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, 13560 + ... + 14416.

It is an arithmetic number, because the mean of its divisors is an integer number (945945).

Almost surely, 2^11987716 is an apocalyptic number.

It is an amenable number.

11987716 is a deficient number, since it is larger than the sum of its proper divisors (10714964).

11987716 is a wasteful number, since it uses less digits than its factorization.

11987716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1141 counting only the distinct ones).

The product of its digits is 21168, while the sum is 40.

The square root of 11987716 is about 3462.3281184775. The cubic root of 11987716 is about 228.8647014516.

The spelling of 11987716 in words is "eleven million, nine hundred eighty-seven thousand, seven hundred sixteen".