865348263 has 48 divisors (see below), whose sum is σ = 1430616096. Its totient is φ = 499322880.

The previous prime is 865348261. The next prime is 865348279. The reversal of 865348263 is 362843568.

It is a happy number.

865348263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 865348263 - 2¹ = 865348261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865348261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 669648 + ... + 670938.

It is an arithmetic number, because the mean of its divisors is an integer number (29804502).

Almost surely, 2^865348263 is an apocalyptic number.

865348263 is a deficient number, since it is larger than the sum of its proper divisors (565267833).

865348263 is a wasteful number, since it uses less digits than its factorization.

865348263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1661 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 865348263 is about 29416.8023925103. The cubic root of 865348263 is about 952.9357982637.

The spelling of 865348263 in words is "eight hundred sixty-five million, three hundred forty-eight thousand, two hundred sixty-three".