663415704 has 192 divisors, whose sum is σ = 2257200000. Its totient is φ = 179516736.

The previous prime is 663415699. The next prime is 663415721. The reversal of 663415704 is 407514366.

It is a happy number.

663415704 is a `hidden beast` number, since 6 + 634 + 15 + 7 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199447 + ... + 202745.

It is an arithmetic number, because the mean of its divisors is an integer number (11756250).

Almost surely, 2^663415704 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 663415704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128600000).

663415704 is an abundant number, since it is smaller than the sum of its proper divisors (1593784296).

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

663415704 is a wasteful number, since it uses less digits than its factorization.

663415704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347 (or 3330 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 663415704 is about 25756.8574170064. The cubic root of 663415704 is about 872.1581615590.

The spelling of 663415704 in words is "six hundred sixty-three million, four hundred fifteen thousand, seven hundred four".