263987223 has 8 divisors (see below), whose sum is σ = 358624368. Its totient is φ = 172670784.

The previous prime is 263987221. The next prime is 263987257. The reversal of 263987223 is 322789362.

263987223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 263987223 - 2¹ = 263987221 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263987221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829990 + ... + 830307.

It is an arithmetic number, because the mean of its divisors is an integer number (44828046).

Almost surely, 2^263987223 is an apocalyptic number.

263987223 is a deficient number, since it is larger than the sum of its proper divisors (94637145).

263987223 is a wasteful number, since it uses less digits than its factorization.

263987223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660353.

The product of its digits is 217728, while the sum is 42.

The square root of 263987223 is about 16247.6836195194. The cubic root of 263987223 is about 641.4965166741.

The spelling of 263987223 in words is "two hundred sixty-three million, nine hundred eighty-seven thousand, two hundred twenty-three".