663741323 has 4 divisors (see below), whose sum is σ = 758561520. Its totient is φ = 568921128.

The previous prime is 663741301. The next prime is 663741343. The reversal of 663741323 is 323147366.

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 663741323 - 2⁶ = 663741259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663741343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47410088 + ... + 47410101.

It is an arithmetic number, because the mean of its divisors is an integer number (189640380).

Almost surely, 2^663741323 is an apocalyptic number.

663741323 is a deficient number, since it is larger than the sum of its proper divisors (94820197).

663741323 is an equidigital number, since it uses as much as digits as its factorization.

663741323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94820196.

The product of its digits is 54432, while the sum is 35.

The square root of 663741323 is about 25763.1776572689. The cubic root of 663741323 is about 872.3008296811.

Adding to 663741323 its reverse (323147366), we get a palindrome (986888689).

The spelling of 663741323 in words is "six hundred sixty-three million, seven hundred forty-one thousand, three hundred twenty-three".