663729934876 has 12 divisors (see below), whose sum is σ = 1186240735008. Its totient is φ = 324804010592.

The previous prime is 663729934859. The next prime is 663729934909. The reversal of 663729934876 is 678439927366.

It is a super-2 number, since 2×663729934876² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1765239001 + ... + 1765239376.

It is an arithmetic number, because the mean of its divisors is an integer number (98853394584).

Almost surely, 2^663729934876 is an apocalyptic number.

It is an amenable number.

663729934876 is a deficient number, since it is larger than the sum of its proper divisors (522510800132).

663729934876 is a wasteful number, since it uses less digits than its factorization.

663729934876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530478428 (or 3530478426 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 70.

The spelling of 663729934876 in words is "six hundred sixty-three billion, seven hundred twenty-nine million, nine hundred thirty-four thousand, eight hundred seventy-six".