11787985 has 16 divisors (see below), whose sum is σ = 15632640. Its totient is φ = 8461440.

The previous prime is 11787959. The next prime is 11787991. The reversal of 11787985 is 58978711.

It is not a de Polignac number, because 11787985 - 2⁷ = 11787857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2989 + ... + 5701.

It is an arithmetic number, because the mean of its divisors is an integer number (977040).

Almost surely, 2^11787985 is an apocalyptic number.

It is an amenable number.

11787985 is a deficient number, since it is larger than the sum of its proper divisors (3844655).

11787985 is a wasteful number, since it uses less digits than its factorization.

11787985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808.

The product of its digits is 141120, while the sum is 46.

The square root of 11787985 is about 3433.3635111942. The cubic root of 11787985 is about 227.5865146141.

The spelling of 11787985 in words is "eleven million, seven hundred eighty-seven thousand, nine hundred eighty-five".