659143 has 4 divisors (see below), whose sum is σ = 661248. Its totient is φ = 657040.

The previous prime is 659137. The next prime is 659159. The reversal of 659143 is 341956.

659143 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-659143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659173) 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, 478 + ... + 1243.

It is an arithmetic number, because the mean of its divisors is an integer number (165312).

2⁶⁵⁹¹⁴³ is an apocalyptic number.

659143 is a deficient number, since it is larger than the sum of its proper divisors (2105).

659143 is a wasteful number, since it uses less digits than its factorization.

659143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104.

The product of its digits is 3240, while the sum is 28.

The square root of 659143 is about 811.8762220930. The cubic root of 659143 is about 87.0281760150.

The spelling of 659143 in words is "six hundred fifty-nine thousand, one hundred forty-three".