663938341 has 4 divisors (see below), whose sum is σ = 724296384. Its totient is φ = 603580300.

The previous prime is 663938329. The next prime is 663938351. The reversal of 663938341 is 143839366.

663938341 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 663938341 - 2¹¹ = 663936293 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 (663938351) 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, 30179005 + ... + 30179026.

It is an arithmetic number, because the mean of its divisors is an integer number (181074096).

Almost surely, 2^663938341 is an apocalyptic number.

It is an amenable number.

663938341 is a deficient number, since it is larger than the sum of its proper divisors (60358043).

663938341 is a wasteful number, since it uses less digits than its factorization.

663938341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60358042.

The product of its digits is 279936, while the sum is 43.

The square root of 663938341 is about 25767.0010090426. The cubic root of 663938341 is about 872.3871293471.

The spelling of 663938341 in words is "six hundred sixty-three million, nine hundred thirty-eight thousand, three hundred forty-one".