245870 has 16 divisors (see below), whose sum is σ = 462240. Its totient is φ = 93984.

The previous prime is 245863. The next prime is 245881. The reversal of 245870 is 78542.

245870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245870.

It is an unprimeable number.

245870 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305 + ... + 764.

It is an arithmetic number, because the mean of its divisors is an integer number (28890).

2²⁴⁵⁸⁷⁰ is an apocalyptic number.

245870 is a deficient number, since it is larger than the sum of its proper divisors (216370).

245870 is a wasteful number, since it uses less digits than its factorization.

245870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 245870 is about 495.8528007383. The cubic root of 245870 is about 62.6472262519.

The spelling of 245870 in words is "two hundred forty-five thousand, eight hundred seventy".