663536223 has 48 divisors (see below), whose sum is σ = 1161878016. Its totient is φ = 356685120.

The previous prime is 663536189. The next prime is 663536261. The reversal of 663536223 is 322635366.

It is not a de Polignac number, because 663536223 - 2¹⁰ = 663535199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663532223) 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, 84636 + ... + 92142.

It is an arithmetic number, because the mean of its divisors is an integer number (24205792).

Almost surely, 2^663536223 is an apocalyptic number.

663536223 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

663536223 is a deficient number, since it is larger than the sum of its proper divisors (498341793).

663536223 is a wasteful number, since it uses less digits than its factorization.

663536223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7604 (or 7601 counting only the distinct ones).

The product of its digits is 116640, while the sum is 36.

The square root of 663536223 is about 25759.1968624800. The cubic root of 663536223 is about 872.2109717173.

The spelling of 663536223 in words is "six hundred sixty-three million, five hundred thirty-six thousand, two hundred twenty-three".