663314784 has 48 divisors (see below), whose sum is σ = 1899495360. Its totient is φ = 201004160.

The previous prime is 663314783. The next prime is 663314803. The reversal of 663314784 is 487413366.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663314783) 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, 313014 + ... + 315125.

It is an arithmetic number, because the mean of its divisors is an integer number (39572820).

Almost surely, 2^663314784 is an apocalyptic number.

It is an amenable number.

663314784 is an abundant number, since it is smaller than the sum of its proper divisors (1236180576).

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

663314784 is a wasteful number, since it uses less digits than its factorization.

663314784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628163 (or 628155 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 663314784 is about 25754.8982525655. The cubic root of 663314784 is about 872.1139345559.

The spelling of 663314784 in words is "six hundred sixty-three million, three hundred fourteen thousand, seven hundred eighty-four".