245806 has 8 divisors (see below), whose sum is σ = 402264. Its totient is φ = 111720.

The previous prime is 245789. The next prime is 245821. The reversal of 245806 is 608542.

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

It is a congruent number.

It is an unprimeable number.

245806 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 3 ways as a sum of consecutive naturals, for example, 5565 + ... + 5608.

It is an arithmetic number, because the mean of its divisors is an integer number (50283).

2²⁴⁵⁸⁰⁶ is an apocalyptic number.

245806 is a deficient number, since it is larger than the sum of its proper divisors (156458).

245806 is a wasteful number, since it uses less digits than its factorization.

245806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11186.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 245806 is about 495.7882612568. The cubic root of 245806 is about 62.6417900859.

The spelling of 245806 in words is "two hundred forty-five thousand, eight hundred six".