245645065 has 4 divisors (see below), whose sum is σ = 294774084. Its totient is φ = 196516048.

The previous prime is 245645041. The next prime is 245645107. The reversal of 245645065 is 560546542.

245645065 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 178142409 + 67502656 = 13347^2 + 8216^2 .

It is a cyclic number.

It is not a de Polignac number, because 245645065 - 2²⁵ = 212090633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24564502 + ... + 24564511.

It is an arithmetic number, because the mean of its divisors is an integer number (73693521).

Almost surely, 2^245645065 is an apocalyptic number.

It is an amenable number.

245645065 is a deficient number, since it is larger than the sum of its proper divisors (49129019).

245645065 is an equidigital number, since it uses as much as digits as its factorization.

245645065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49129018.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 245645065 is about 15673.0681425176. The cubic root of 245645065 is about 626.2811608087.

The spelling of 245645065 in words is "two hundred forty-five million, six hundred forty-five thousand, sixty-five".