11871663 has 8 divisors (see below), whose sum is σ = 16065408. Its totient is φ = 7796184.

The previous prime is 11871659. The next prime is 11871689. The reversal of 11871663 is 36617811.

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

It is not a de Polignac number, because 11871663 - 2² = 11871659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11871653) 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, 29331 + ... + 29732.

It is an arithmetic number, because the mean of its divisors is an integer number (2008176).

Almost surely, 2^11871663 is an apocalyptic number.

11871663 is a deficient number, since it is larger than the sum of its proper divisors (4193745).

11871663 is an equidigital number, since it uses as much as digits as its factorization.

11871663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59133.

The product of its digits is 6048, while the sum is 33.

The square root of 11871663 is about 3445.5279711533. The cubic root of 11871663 is about 228.1237593727.

It can be divided in two parts, 1187 and 1663, that added together give a triangular number (2850 = T₇₅).

The spelling of 11871663 in words is "eleven million, eight hundred seventy-one thousand, six hundred sixty-three".