8628918817 has 4 divisors (see below), whose sum is σ = 8791728660. Its totient is φ = 8466108976.

The previous prime is 8628918797. The next prime is 8628918829. The reversal of 8628918817 is 7188198268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4045087201 + 4583831616 = 63601^2 + 67704^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628918817 - 2²³ = 8620530209 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8628918877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81404842 + ... + 81404947.

It is an arithmetic number, because the mean of its divisors is an integer number (2197932165).

Almost surely, 2^8628918817 is an apocalyptic number.

It is an amenable number.

8628918817 is a deficient number, since it is larger than the sum of its proper divisors (162809843).

8628918817 is a wasteful number, since it uses less digits than its factorization.

8628918817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162809842.

The product of its digits is 3096576, while the sum is 58.

The square root of 8628918817 is about 92891.9739105591. The cubic root of 8628918817 is about 2051.0935127271.

The spelling of 8628918817 in words is "eight billion, six hundred twenty-eight million, nine hundred eighteen thousand, eight hundred seventeen".