263642223 has 16 divisors (see below), whose sum is σ = 386620416. Its totient is φ = 158788320.

The previous prime is 263642213. The next prime is 263642293. The reversal of 263642223 is 322246362.

It is not a de Polignac number, because 263642223 - 2¹⁰ = 263641199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263642213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70083 + ... + 73748.

It is an arithmetic number, because the mean of its divisors is an integer number (24163776).

Almost surely, 2^263642223 is an apocalyptic number.

263642223 is a deficient number, since it is larger than the sum of its proper divisors (122978193).

263642223 is a wasteful number, since it uses less digits than its factorization.

263642223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143894.

The product of its digits is 20736, while the sum is 30.

The square root of 263642223 is about 16237.0632504773. The cubic root of 263642223 is about 641.2169415528.

Adding to 263642223 its reverse (322246362), we get a palindrome (585888585).

The spelling of 263642223 in words is "two hundred sixty-three million, six hundred forty-two thousand, two hundred twenty-three".