245804 has 24 divisors (see below), whose sum is σ = 482160. Its totient is φ = 108864.

The previous prime is 245789. The next prime is 245821. The reversal of 245804 is 408542.

It is a self number, because there is not a number n which added to its sum of digits gives 245804.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427 + ... + 1589.

It is an arithmetic number, because the mean of its divisors is an integer number (20090).

2²⁴⁵⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

245804 is a deficient number, since it is larger than the sum of its proper divisors (236356).

245804 is a wasteful number, since it uses less digits than its factorization.

245804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 245804 is about 495.7862442626. The cubic root of 245804 is about 62.6416201905.

The spelling of 245804 in words is "two hundred forty-five thousand, eight hundred four".