245879 has 4 divisors (see below), whose sum is σ = 258840. Its totient is φ = 232920.

The previous prime is 245863. The next prime is 245881. The reversal of 245879 is 978542.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245879 - 2⁴ = 245863 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 4⁸ + 8 + 5⁵ + 7⁶ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6452 + ... + 6489.

It is an arithmetic number, because the mean of its divisors is an integer number (64710).

2²⁴⁵⁸⁷⁹ is an apocalyptic number.

245879 is a deficient number, since it is larger than the sum of its proper divisors (12961).

245879 is a wasteful number, since it uses less digits than its factorization.

245879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960.

The product of its digits is 20160, while the sum is 35.

The square root of 245879 is about 495.8618759292. The cubic root of 245879 is about 62.6479906371.

The spelling of 245879 in words is "two hundred forty-five thousand, eight hundred seventy-nine".