8613564643 has 8 divisors (see below), whose sum is σ = 8689120128. Its totient is φ = 8538305664.

The previous prime is 8613564599. The next prime is 8613564677. The reversal of 8613564643 is 3464653168.

8613564643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-8613564643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8613564593 and 8613564602.

It is not an unprimeable number, because it can be changed into a prime (8613504643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15571 + ... + 132172.

It is an arithmetic number, because the mean of its divisors is an integer number (1086140016).

Almost surely, 2^8613564643 is an apocalyptic number.

8613564643 is a deficient number, since it is larger than the sum of its proper divisors (75555485).

8613564643 is a wasteful number, since it uses less digits than its factorization.

8613564643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148253.

The product of its digits is 1244160, while the sum is 46.

The square root of 8613564643 is about 92809.2917923631. The cubic root of 8613564643 is about 2049.8762283393.

The spelling of 8613564643 in words is "eight billion, six hundred thirteen million, five hundred sixty-four thousand, six hundred forty-three".