663168439 has 8 divisors (see below), whose sum is σ = 666607392. Its totient is φ = 659736960.

The previous prime is 663168413. The next prime is 663168529. The reversal of 663168439 is 934861366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663168439 - 2⁹ = 663167927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663168409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270459 + ... + 272899.

It is an arithmetic number, because the mean of its divisors is an integer number (83325924).

Almost surely, 2^663168439 is an apocalyptic number.

663168439 is a deficient number, since it is larger than the sum of its proper divisors (3438953).

663168439 is a wasteful number, since it uses less digits than its factorization.

663168439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737.

The product of its digits is 559872, while the sum is 46.

The square root of 663168439 is about 25752.0569858021. The cubic root of 663168439 is about 872.0497926109.

The spelling of 663168439 in words is "six hundred sixty-three million, one hundred sixty-eight thousand, four hundred thirty-nine".