4063661784 has 672 divisors, whose sum is σ = 15361459200. Its totient is φ = 982575360.

The previous prime is 4063661779. The next prime is 4063661821. The reversal of 4063661784 is 4871663604.

It is a happy number.

4063661784 is a `hidden beast` number, since 4 + 0 + 636 + 6 + 1 + 7 + 8 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 131085849 + ... + 131085879.

Almost surely, 2^4063661784 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 4063661784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7680729600).

4063661784 is an abundant number, since it is smaller than the sum of its proper divisors (11297797416).

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

4063661784 is a wasteful number, since it uses less digits than its factorization.

4063661784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 4063661784 is about 63746.8570519363. The cubic root of 4063661784 is about 1595.7781646562.

The spelling of 4063661784 in words is "four billion, sixty-three million, six hundred sixty-one thousand, seven hundred eighty-four".