11783985 has 16 divisors (see below), whose sum is σ = 18916800. Its totient is φ = 6264000.

The previous prime is 11783969. The next prime is 11783987. The reversal of 11783985 is 58938711.

11783985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11783985 - 2⁴ = 11783969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11783987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4110 + ... + 6360.

It is an arithmetic number, because the mean of its divisors is an integer number (1182300).

Almost surely, 2^11783985 is an apocalyptic number.

11783985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11783985 is a deficient number, since it is larger than the sum of its proper divisors (7132815).

11783985 is a wasteful number, since it uses less digits than its factorization.

11783985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608.

The product of its digits is 60480, while the sum is 42.

The square root of 11783985 is about 3432.7809426178. The cubic root of 11783985 is about 227.5607695003.

The spelling of 11783985 in words is "eleven million, seven hundred eighty-three thousand, nine hundred eighty-five".