216147 has 8 divisors (see below), whose sum is σ = 291280. Its totient is φ = 142560.

The previous prime is 216133. The next prime is 216149. The reversal of 216147 is 741612.

216147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 216147 - 2¹⁰ = 215123 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216149) 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, 4 + ... + 657.

It is an arithmetic number, because the mean of its divisors is an integer number (36410).

2²¹⁶¹⁴⁷ is an apocalyptic number.

216147 is a deficient number, since it is larger than the sum of its proper divisors (75133).

216147 is a wasteful number, since it uses less digits than its factorization.

216147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its digits is 336, while the sum is 21.

The square root of 216147 is about 464.9161214671. The cubic root of 216147 is about 60.0136080246.

Adding to 216147 its reverse (741612), we get a palindrome (957759).

It can be divided in two parts, 216 and 147, that added together give a palindrome (363).

The spelling of 216147 in words is "two hundred sixteen thousand, one hundred forty-seven".