259617 has 4 divisors (see below), whose sum is σ = 346160. Its totient is φ = 173076.

The previous prime is 259603. The next prime is 259619. The reversal of 259617 is 716952.

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 259617 - 2¹⁴ = 243233 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 259617.

It is not an unprimeable number, because it can be changed into a prime (259619) 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, 43267 + ... + 43272.

It is an arithmetic number, because the mean of its divisors is an integer number (86540).

2²⁵⁹⁶¹⁷ is an apocalyptic number.

It is an amenable number.

259617 is a deficient number, since it is larger than the sum of its proper divisors (86543).

259617 is an equidigital number, since it uses as much as digits as its factorization.

259617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86542.

The product of its digits is 3780, while the sum is 30.

The square root of 259617 is about 509.5262505505. The cubic root of 259617 is about 63.7936878547.

The spelling of 259617 in words is "two hundred fifty-nine thousand, six hundred seventeen".