659943 has 6 divisors (see below), whose sum is σ = 953264. Its totient is φ = 439956.

The previous prime is 659941. The next prime is 659947. The reversal of 659943 is 349956.

659943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 659943 - 2¹ = 659941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 659898 and 659907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36655 + ... + 36672.

2⁶⁵⁹⁹⁴³ is an apocalyptic number.

659943 is a deficient number, since it is larger than the sum of its proper divisors (293321).

659943 is a wasteful number, since it uses less digits than its factorization.

659943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73333 (or 73330 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 659943 is about 812.3687586312. The cubic root of 659943 is about 87.0633703977.

The spelling of 659943 in words is "six hundred fifty-nine thousand, nine hundred forty-three".