663115776 has 96 divisors (see below), whose sum is σ = 1816279920. Its totient is φ = 214990848.

The previous prime is 663115729. The next prime is 663115793. The reversal of 663115776 is 677511366.

It is a tau number, because it is divible by the number of its divisors (96).

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, 225870 + ... + 228786.

Almost surely, 2^663115776 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 663115776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908139960).

663115776 is an abundant number, since it is smaller than the sum of its proper divisors (1153164144).

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

663115776 is a wasteful number, since it uses less digits than its factorization.

663115776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979 (or 2959 counting only the distinct ones).

The product of its digits is 158760, while the sum is 42.

The square root of 663115776 is about 25751.0344646579. The cubic root of 663115776 is about 872.0267084937.

The spelling of 663115776 in words is "six hundred sixty-three million, one hundred fifteen thousand, seven hundred seventy-six".