245723 has 2 divisors, whose sum is σ = 245724. Its totient is φ = 245722.

The previous prime is 245719. The next prime is 245741. The reversal of 245723 is 327542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245723 - 2² = 245719 is a prime.

It is a d-powerful number, because it can be written as 2 + 4⁸ + 7⁴ + 5³ + 2⁹ + 3¹¹ .

It is not a weakly prime, because it can be changed into another prime (245753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122861 + 122862.

It is an arithmetic number, because the mean of its divisors is an integer number (122862).

2²⁴⁵⁷²³ is an apocalyptic number.

245723 is a deficient number, since it is larger than the sum of its proper divisors (1).

245723 is an equidigital number, since it uses as much as digits as its factorization.

245723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 23.

The square root of 245723 is about 495.7045491016. The cubic root of 245723 is about 62.6347386525.

The spelling of 245723 in words is "two hundred forty-five thousand, seven hundred twenty-three".