5663427840 has 648 divisors, whose sum is σ = 23264317440. Its totient is φ = 1268047872.

The previous prime is 5663427827. The next prime is 5663427853. The reversal of 5663427840 is 487243665.

5663427840 is a `hidden beast` number, since 5 + 6 + 634 + 2 + 7 + 8 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (5663427827) and next prime (5663427853).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 44593857 + ... + 44593983.

Almost surely, 2^5663427840 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 5663427840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11632158720).

5663427840 is an abundant number, since it is smaller than the sum of its proper divisors (17600889600).

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

5663427840 is a wasteful number, since it uses less digits than its factorization.

5663427840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The square root of 5663427840 is about 75255.7495477920. The cubic root of 5663427840 is about 1782.4873528632.

The spelling of 5663427840 in words is "five billion, six hundred sixty-three million, four hundred twenty-seven thousand, eight hundred forty".