8686397648 has 20 divisors (see below), whose sum is σ = 17284758660. Its totient is φ = 4225814784.

The previous prime is 8686397647. The next prime is 8686397651. The reversal of 8686397648 is 8467936868.

8686397648 is digitally balanced in base 2, 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 2 ways, for example, as 3261780544 + 5424617104 = 57112^2 + 73652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8686397641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7335893 + ... + 7337076.

It is an arithmetic number, because the mean of its divisors is an integer number (864237933).

Almost surely, 2^8686397648 is an apocalyptic number.

It is an amenable number.

8686397648 is a deficient number, since it is larger than the sum of its proper divisors (8598361012).

8686397648 is a wasteful number, since it uses less digits than its factorization.

8686397648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14673014 (or 14673008 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 65.

The square root of 8686397648 is about 93200.8457472356. The cubic root of 8686397648 is about 2055.6376760625.

The spelling of 8686397648 in words is "eight billion, six hundred eighty-six million, three hundred ninety-seven thousand, six hundred forty-eight".