11986647 has 8 divisors (see below), whose sum is σ = 16014960. Its totient is φ = 7974720.

The previous prime is 11986643. The next prime is 11986661. The reversal of 11986647 is 74668911.

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

It is not a de Polignac number, because 11986647 - 2² = 11986643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11986599 and 11986608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11986643) 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, 2272 + ... + 5397.

It is an arithmetic number, because the mean of its divisors is an integer number (2001870).

Almost surely, 2^11986647 is an apocalyptic number.

11986647 is a deficient number, since it is larger than the sum of its proper divisors (4028313).

11986647 is an equidigital number, since it uses as much as digits as its factorization.

11986647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8193.

The product of its digits is 72576, while the sum is 42.

The square root of 11986647 is about 3462.1737391414. The cubic root of 11986647 is about 228.8578982752.

The spelling of 11986647 in words is "eleven million, nine hundred eighty-six thousand, six hundred forty-seven".