663240113 has 4 divisors (see below), whose sum is σ = 672325668. Its totient is φ = 654154560.

The previous prime is 663240107. The next prime is 663240131. The reversal of 663240113 is 311042366.

663240113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 372605809 + 290634304 = 19303^2 + 17048^2 .

It is a cyclic number.

It is not a de Polignac number, because 663240113 - 2¹² = 663236017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (663240103) 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, 4542668 + ... + 4542813.

It is an arithmetic number, because the mean of its divisors is an integer number (168081417).

Almost surely, 2^663240113 is an apocalyptic number.

It is an amenable number.

663240113 is a deficient number, since it is larger than the sum of its proper divisors (9085555).

663240113 is an equidigital number, since it uses as much as digits as its factorization.

663240113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085554.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 663240113 is about 25753.4485651922. The cubic root of 663240113 is about 872.0812079807.

Adding to 663240113 its reverse (311042366), we get a palindrome (974282479).

The spelling of 663240113 in words is "six hundred sixty-three million, two hundred forty thousand, one hundred thirteen".