663674239736 has 32 divisors (see below), whose sum is σ = 1312551302400. Its totient is φ = 313731704160.

The previous prime is 663674239729. The next prime is 663674239747. The reversal of 663674239736 is 637932476366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4371680 + ... + 4520943.

It is an arithmetic number, because the mean of its divisors is an integer number (41017228200).

Almost surely, 2^663674239736 is an apocalyptic number.

It is an amenable number.

663674239736 is a deficient number, since it is larger than the sum of its proper divisors (648877062664).

663674239736 is a wasteful number, since it uses less digits than its factorization.

663674239736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8893139 (or 8893135 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 62.

The spelling of 663674239736 in words is "six hundred sixty-three billion, six hundred seventy-four million, two hundred thirty-nine thousand, seven hundred thirty-six".