11987711 has 8 divisors (see below), whose sum is σ = 12276000. Its totient is φ = 11702880.

The previous prime is 11987687. The next prime is 11987719. The reversal of 11987711 is 11778911.

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

It is a cyclic number.

It is not a de Polignac number, because 11987711 - 2¹⁴ = 11971327 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 6965 + ... + 8513.

It is an arithmetic number, because the mean of its divisors is an integer number (1534500).

Almost surely, 2^11987711 is an apocalyptic number.

11987711 is a deficient number, since it is larger than the sum of its proper divisors (288289).

11987711 is a wasteful number, since it uses less digits than its factorization.

11987711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729.

The product of its digits is 3528, while the sum is 35.

The square root of 11987711 is about 3462.3273964199. The cubic root of 11987711 is about 228.8646696322.

The spelling of 11987711 in words is "eleven million, nine hundred eighty-seven thousand, seven hundred eleven".