245713 has 8 divisors (see below), whose sum is σ = 271656. Its totient is φ = 220800.

The previous prime is 245711. The next prime is 245719. The reversal of 245713 is 317542.

It can be written as a sum of positive squares in 4 ways, for example, as 7569 + 238144 = 87^2 + 488^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245713 - 2¹ = 245711 is a prime.

It is a Duffinian number.

245713 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (245711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 763.

It is an arithmetic number, because the mean of its divisors is an integer number (33957).

245713 is a Friedman number, since it can be written as 15*(4^7-3)-2, using all its digits and the basic arithmetic operations.

2²⁴⁵⁷¹³ is an apocalyptic number.

It is an amenable number.

245713 is a deficient number, since it is larger than the sum of its proper divisors (25943).

245713 is a wasteful number, since it uses less digits than its factorization.

245713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its digits is 840, while the sum is 22.

The square root of 245713 is about 495.6944623455. The cubic root of 245713 is about 62.6338889751.

The spelling of 245713 in words is "two hundred forty-five thousand, seven hundred thirteen".