66147 has 8 divisors (see below), whose sum is σ = 93456. Its totient is φ = 41472.

The previous prime is 66137. The next prime is 66161. The reversal of 66147 is 74166.

66147 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 66147 - 2⁶ = 66083 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66147.

It is not an unprimeable number, because it can be changed into a prime (66107) 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, 598 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (11682).

2⁶⁶¹⁴⁷ is an apocalyptic number.

66147 is a deficient number, since it is larger than the sum of its proper divisors (27309).

66147 is a wasteful number, since it uses less digits than its factorization.

66147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its digits is 1008, while the sum is 24.

The square root of 66147 is about 257.1905908077. The cubic root of 66147 is about 40.4423811043.

The spelling of 66147 in words is "sixty-six thousand, one hundred forty-seven".