8636494860 has 192 divisors, whose sum is σ = 31537981440. Its totient is φ = 1920672000.

The previous prime is 8636494787. The next prime is 8636494861. The reversal of 8636494860 is 684946368.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 8636494797 and 8636494806.

It is not an unprimeable number, because it can be changed into a prime (8636494861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108985 + ... + 170735.

It is an arithmetic number, because the mean of its divisors is an integer number (164260320).

Almost surely, 2^8636494860 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 8636494860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15768990720).

8636494860 is an abundant number, since it is smaller than the sum of its proper divisors (22901486580).

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

8636494860 is a wasteful number, since it uses less digits than its factorization.

8636494860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61813 (or 61805 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The square root of 8636494860 is about 92932.7437451408. The cubic root of 8636494860 is about 2051.6936121326.

The spelling of 8636494860 in words is "eight billion, six hundred thirty-six million, four hundred ninety-four thousand, eight hundred sixty".