11985747 has 8 divisors (see below), whose sum is σ = 16496640. Its totient is φ = 7732680.

The previous prime is 11985703. The next prime is 11985761. The reversal of 11985747 is 74758911.

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

It is not a de Polignac number, because 11985747 - 2⁶ = 11985683 is a prime.

It is a super-2 number, since 2×11985747² = 287316262296018, which contains 22 as substring.

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 junction number, because it is equal to n+sod(n) for n = 11985699 and 11985708.

It is not an unprimeable number, because it can be changed into a prime (11985767) 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, 64347 + ... + 64532.

It is an arithmetic number, because the mean of its divisors is an integer number (2062080).

Almost surely, 2^11985747 is an apocalyptic number.

11985747 is a deficient number, since it is larger than the sum of its proper divisors (4510893).

11985747 is a wasteful number, since it uses less digits than its factorization.

11985747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128913.

The product of its digits is 70560, while the sum is 42.

The square root of 11985747 is about 3462.0437605553. The cubic root of 11985747 is about 228.8521703107.

The spelling of 11985747 in words is "eleven million, nine hundred eighty-five thousand, seven hundred forty-seven".