143647 has 4 divisors (see below), whose sum is σ = 164176. Its totient is φ = 123120.

The previous prime is 143629. The next prime is 143651. The reversal of 143647 is 746341.

143647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746341 = 149 ⋅5009.

It is a cyclic number.

It is not a de Polignac number, because 143647 - 2⁷ = 143519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143647.

It is not an unprimeable number, because it can be changed into a prime (143617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10254 + ... + 10267.

It is an arithmetic number, because the mean of its divisors is an integer number (41044).

2¹⁴³⁶⁴⁷ is an apocalyptic number.

143647 is a deficient number, since it is larger than the sum of its proper divisors (20529).

143647 is an equidigital number, since it uses as much as digits as its factorization.

143647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20528.

The product of its digits is 2016, while the sum is 25.

The square root of 143647 is about 379.0079154846. The cubic root of 143647 is about 52.3719631301.

Adding to 143647 its reverse (746341), we get a palindrome (889988).

The spelling of 143647 in words is "one hundred forty-three thousand, six hundred forty-seven".