11988654 has 8 divisors (see below), whose sum is σ = 23977320. Its totient is φ = 3996216.

The previous prime is 11988649. The next prime is 11988671. The reversal of 11988654 is 45688911.

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

11988654 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999049 + ... + 999060.

It is an arithmetic number, because the mean of its divisors is an integer number (2997165).

Almost surely, 2^11988654 is an apocalyptic number.

11988654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11988654 is a wasteful number, since it uses less digits than its factorization.

11988654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998114.

The product of its digits is 69120, while the sum is 42.

The square root of 11988654 is about 3462.4635738156. The cubic root of 11988654 is about 228.8706706034.

The spelling of 11988654 in words is "eleven million, nine hundred eighty-eight thousand, six hundred fifty-four".