263223216 has 40 divisors (see below), whose sum is σ = 755549360. Its totient is φ = 87740928.

The previous prime is 263223211. The next prime is 263223241. The reversal of 263223216 is 612322362.

263223216 is a `hidden beast` number, since 2 + 632 + 2 + 3 + 21 + 6 = 666.

It is a super-2 number, since 2×263223216² = 138572922882765312, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 263223216.

It is not an unprimeable number, because it can be changed into a prime (263223211) 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, 304225 + ... + 305088.

It is an arithmetic number, because the mean of its divisors is an integer number (18888734).

Almost surely, 2^263223216 is an apocalyptic number.

It is an amenable number.

263223216 is an abundant number, since it is smaller than the sum of its proper divisors (492326144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263223216 is a wasteful number, since it uses less digits than its factorization.

263223216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609330 (or 609318 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 263223216 is about 16224.1553247003. The cubic root of 263223216 is about 640.8770657359.

Adding to 263223216 its reverse (612322362), we get a palindrome (875545578).

The spelling of 263223216 in words is "two hundred sixty-three million, two hundred twenty-three thousand, two hundred sixteen".