263872823 has 4 divisors (see below), whose sum is σ = 265799040. Its totient is φ = 261946608.

The previous prime is 263872801. The next prime is 263872901. The reversal of 263872823 is 328278362.

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 263872823 - 2¹⁰ = 263871799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263872223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962903 + ... + 963176.

It is an arithmetic number, because the mean of its divisors is an integer number (66449760).

Almost surely, 2^263872823 is an apocalyptic number.

263872823 is a deficient number, since it is larger than the sum of its proper divisors (1926217).

263872823 is a wasteful number, since it uses less digits than its factorization.

263872823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926216.

The product of its digits is 193536, while the sum is 41.

The square root of 263872823 is about 16244.1627361954. The cubic root of 263872823 is about 641.4038381925.

The spelling of 263872823 in words is "two hundred sixty-three million, eight hundred seventy-two thousand, eight hundred twenty-three".