265328663 has 4 divisors (see below), whose sum is σ = 265602888. Its totient is φ = 265054440.

The previous prime is 265328617. The next prime is 265328681. The reversal of 265328663 is 366823562.

265328663 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 is a cyclic number.

It is not a de Polignac number, because 265328663 - 2¹⁸ = 265066519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265328663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265328603) 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, 135656 + ... + 137597.

It is an arithmetic number, because the mean of its divisors is an integer number (66400722).

Almost surely, 2^265328663 is an apocalyptic number.

265328663 is a deficient number, since it is larger than the sum of its proper divisors (274225).

265328663 is an equidigital number, since it uses as much as digits as its factorization.

265328663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274224.

The product of its digits is 311040, while the sum is 41.

The square root of 265328663 is about 16288.9122718492. The cubic root of 265328663 is about 642.5812605967.

The spelling of 265328663 in words is "two hundred sixty-five million, three hundred twenty-eight thousand, six hundred sixty-three".