5681623788 has 144 divisors (see below), whose sum is σ = 15472731456. Its totient is φ = 1751592960.

The previous prime is 5681623723. The next prime is 5681623793. The reversal of 5681623788 is 8873261865.

5681623788 is a `hidden beast` number, since 5 + 6 + 8 + 1 + 623 + 7 + 8 + 8 = 666.

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 47 ways as a sum of consecutive naturals, for example, 10904968 + ... + 10905488.

It is an arithmetic number, because the mean of its divisors is an integer number (107449524).

Almost surely, 2^5681623788 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 5681623788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7736365728).

5681623788 is an abundant number, since it is smaller than the sum of its proper divisors (9791107668).

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

5681623788 is a wasteful number, since it uses less digits than its factorization.

5681623788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 819 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 5681623788 is about 75376.5466706986. The cubic root of 5681623788 is about 1784.3942882820.

The spelling of 5681623788 in words is "five billion, six hundred eighty-one million, six hundred twenty-three thousand, seven hundred eighty-eight".