11487711 has 4 divisors (see below), whose sum is σ = 15316952. Its totient is φ = 7658472.

The previous prime is 11487709. The next prime is 11487737. The reversal of 11487711 is 11778411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11778411 = 3 ⋅3926137.

It is not a de Polignac number, because 11487711 - 2¹ = 11487709 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 (11487211) 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, 1914616 + ... + 1914621.

It is an arithmetic number, because the mean of its divisors is an integer number (3829238).

Almost surely, 2^11487711 is an apocalyptic number.

11487711 is a deficient number, since it is larger than the sum of its proper divisors (3829241).

11487711 is an equidigital number, since it uses as much as digits as its factorization.

11487711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829240.

The product of its digits is 1568, while the sum is 30.

The square root of 11487711 is about 3389.3525930478. The cubic root of 11487711 is about 225.6374417573.

The spelling of 11487711 in words is "eleven million, four hundred eighty-seven thousand, seven hundred eleven".