8172266617 has 4 divisors (see below), whose sum is σ = 8185910400. Its totient is φ = 8158622836.

The previous prime is 8172266603. The next prime is 8172266629. The reversal of 8172266617 is 7166622718.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8172266617 - 2⁷ = 8172266489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8172266677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6820993 + ... + 6822190.

It is an arithmetic number, because the mean of its divisors is an integer number (2046477600).

Almost surely, 2^8172266617 is an apocalyptic number.

It is an amenable number.

8172266617 is a deficient number, since it is larger than the sum of its proper divisors (13643783).

8172266617 is a wasteful number, since it uses less digits than its factorization.

8172266617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13643782.

The product of its digits is 338688, while the sum is 46.

The square root of 8172266617 is about 90400.5896938731. The cubic root of 8172266617 is about 2014.2537257420.

The spelling of 8172266617 in words is "eight billion, one hundred seventy-two million, two hundred sixty-six thousand, six hundred seventeen".