245965 has 4 divisors (see below), whose sum is σ = 295164. Its totient is φ = 196768.

The previous prime is 245963. The next prime is 245977. The reversal of 245965 is 569542.

245965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 114921 + 131044 = 339^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 245965 - 2¹ = 245963 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

245965 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245963) 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, 24592 + ... + 24601.

It is an arithmetic number, because the mean of its divisors is an integer number (73791).

2²⁴⁵⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

245965 is a deficient number, since it is larger than the sum of its proper divisors (49199).

245965 is an equidigital number, since it uses as much as digits as its factorization.

245965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49198.

The product of its digits is 10800, while the sum is 31.

The square root of 245965 is about 495.9485860450. The cubic root of 245965 is about 62.6552938217.

The spelling of 245965 in words is "two hundred forty-five thousand, nine hundred sixty-five".