143684 has 12 divisors (see below), whose sum is σ = 266364. Its totient is φ = 67584.

The previous prime is 143677. The next prime is 143687. The reversal of 143684 is 486341.

It can be written as a sum of positive squares in 2 ways, for example, as 40000 + 103684 = 200^2 + 322^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143684.

It is not an unprimeable number, because it can be changed into a prime (143687) 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, 989 + ... + 1124.

It is an arithmetic number, because the mean of its divisors is an integer number (22197).

2¹⁴³⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

143684 is a deficient number, since it is larger than the sum of its proper divisors (122680).

143684 is a wasteful number, since it uses less digits than its factorization.

143684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2132 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 143684 is about 379.0567239873. The cubic root of 143684 is about 52.3764593286.

The spelling of 143684 in words is "one hundred forty-three thousand, six hundred eighty-four".