8681227650 has 180 divisors, whose sum is σ = 25626749478. Its totient is φ = 2178524160.

The previous prime is 8681227579. The next prime is 8681227669. The reversal of 8681227650 is 567221868.

8681227650 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 9 ways, for example, as 3744338481 + 4936889169 = 61191^2 + 70263^2 .

It is a super-2 number, since 2×8681227650² (a number of 21 digits) contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8681227596 and 8681227605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 1166742 + ... + 1174158.

Almost surely, 2^8681227650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8681227650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12813374739).

8681227650 is an abundant number, since it is smaller than the sum of its proper divisors (16945521828).

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

8681227650 is a wasteful number, since it uses less digits than its factorization.

8681227650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7475 (or 7444 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 8681227650 is about 93173.1058299550. The cubic root of 8681227650 is about 2055.2297681178.

The spelling of 8681227650 in words is "eight billion, six hundred eighty-one million, two hundred twenty-seven thousand, six hundred fifty".