245613 has 16 divisors (see below), whose sum is σ = 358400. Its totient is φ = 149040.

The previous prime is 245593. The next prime is 245621. The reversal of 245613 is 316542.

It is a happy number.

It is not a de Polignac number, because 245613 - 2¹⁰ = 244589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1698 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (22400).

2²⁴⁵⁶¹³ is an apocalyptic number.

It is an amenable number.

245613 is a deficient number, since it is larger than the sum of its proper divisors (112787).

245613 is a wasteful number, since it uses less digits than its factorization.

245613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192.

The product of its digits is 720, while the sum is 21.

The square root of 245613 is about 495.5935834936. The cubic root of 245613 is about 62.6253909323.

It can be divided in two parts, 245 and 613, that added together give a palindrome (858).

The spelling of 245613 in words is "two hundred forty-five thousand, six hundred thirteen".