259613 has 4 divisors (see below), whose sum is σ = 262620. Its totient is φ = 256608.

The previous prime is 259603. The next prime is 259619. The reversal of 259613 is 316952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 182329 + 77284 = 427^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 259613 - 2¹² = 255517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 1370 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (65655).

2²⁵⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

259613 is a deficient number, since it is larger than the sum of its proper divisors (3007).

259613 is an equidigital number, since it uses as much as digits as its factorization.

259613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006.

The product of its digits is 1620, while the sum is 26.

The square root of 259613 is about 509.5223253205. The cubic root of 259613 is about 63.7933602233.

The spelling of 259613 in words is "two hundred fifty-nine thousand, six hundred thirteen".