659937 has 4 divisors (see below), whose sum is σ = 879920. Its totient is φ = 439956.

The previous prime is 659917. The next prime is 659941. The reversal of 659937 is 739956.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 659937 - 2⁶ = 659873 is a prime.

It is a D-number.

It is a Duffinian number.

659937 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 659895 and 659904.

It is not an unprimeable number, because it can be changed into a prime (659917) 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, 109987 + ... + 109992.

It is an arithmetic number, because the mean of its divisors is an integer number (219980).

2⁶⁵⁹⁹³⁷ is an apocalyptic number.

It is an amenable number.

659937 is a deficient number, since it is larger than the sum of its proper divisors (219983).

659937 is a wasteful number, since it uses less digits than its factorization.

659937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219982.

The product of its digits is 51030, while the sum is 39.

The square root of 659937 is about 812.3650657186. The cubic root of 659937 is about 87.0631065457.

It can be divided in two parts, 659 and 937, that added together give a triangular number (1596 = T₅₆).

The spelling of 659937 in words is "six hundred fifty-nine thousand, nine hundred thirty-seven".