663793688839 has 8 divisors (see below), whose sum is σ = 666778554000. Its totient is φ = 660812655552.

The previous prime is 663793688837. The next prime is 663793688849. The reversal of 663793688839 is 938886397366.

663793688839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 663793688839 - 2¹ = 663793688837 is a prime.

It is a super-2 number, since 2×663793688839² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663793688837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610449 + ... + 1303930.

It is an arithmetic number, because the mean of its divisors is an integer number (83347319250).

Almost surely, 2^663793688839 is an apocalyptic number.

663793688839 is a deficient number, since it is larger than the sum of its proper divisors (2984865161).

663793688839 is a wasteful number, since it uses less digits than its factorization.

663793688839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915937.

The product of its digits is 1693052928, while the sum is 76.

The spelling of 663793688839 in words is "six hundred sixty-three billion, seven hundred ninety-three million, six hundred eighty-eight thousand, eight hundred thirty-nine".