8217566601 has 16 divisors (see below), whose sum is σ = 11086084800. Its totient is φ = 5413782528.

The previous prime is 8217566593. The next prime is 8217566603. The reversal of 8217566601 is 1066657128.

8217566601 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8217566601 - 2³ = 8217566593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8217566603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530910 + ... + 546168.

It is an arithmetic number, because the mean of its divisors is an integer number (692880300).

Almost surely, 2^8217566601 is an apocalyptic number.

It is an amenable number.

8217566601 is a deficient number, since it is larger than the sum of its proper divisors (2868518199).

8217566601 is a wasteful number, since it uses less digits than its factorization.

8217566601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17368.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 8217566601 is about 90650.7948172546. The cubic root of 8217566601 is about 2017.9686307739.

The spelling of 8217566601 in words is "eight billion, two hundred seventeen million, five hundred sixty-six thousand, six hundred one".