663285923936 has 96 divisors (see below), whose sum is σ = 1386569560320. Its totient is φ = 311654813184.

The previous prime is 663285923929. The next prime is 663285923939. The reversal of 663285923936 is 639329582366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663285923939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90448526 + ... + 90455858.

It is an arithmetic number, because the mean of its divisors is an integer number (14443432920).

Almost surely, 2^663285923936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663285923936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693284780160).

663285923936 is an abundant number, since it is smaller than the sum of its proper divisors (723283636384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663285923936 is a wasteful number, since it uses less digits than its factorization.

663285923936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9508 (or 9500 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 62.

The spelling of 663285923936 in words is "six hundred sixty-three billion, two hundred eighty-five million, nine hundred twenty-three thousand, nine hundred thirty-six".