659929 has 4 divisors (see below), whose sum is σ = 664884. Its totient is φ = 654976.

The previous prime is 659917. The next prime is 659941. The reversal of 659929 is 929956.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (659917) and next prime (659941).

It can be written as a sum of positive squares in 2 ways, for example, as 204304 + 455625 = 452^2 + 675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-659929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 659891 and 659900.

It is not an unprimeable number, because it can be changed into a prime (659999) 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, 2272 + ... + 2545.

It is an arithmetic number, because the mean of its divisors is an integer number (166221).

2⁶⁵⁹⁹²⁹ is an apocalyptic number.

It is an amenable number.

659929 is a deficient number, since it is larger than the sum of its proper divisors (4955).

659929 is a wasteful number, since it uses less digits than its factorization.

659929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954.

The product of its digits is 43740, while the sum is 40.

The square root of 659929 is about 812.3601418090. The cubic root of 659929 is about 87.0627547406.

The spelling of 659929 in words is "six hundred fifty-nine thousand, nine hundred twenty-nine".