8123663217 has 8 divisors (see below), whose sum is σ = 10859397120. Its totient is φ = 5401852400.

The previous prime is 8123663189. The next prime is 8123663221. The reversal of 8123663217 is 7123663218.

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

It is a cyclic number.

It is not a de Polignac number, because 8123663217 - 2¹⁹ = 8123138929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8123663287) 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, 3479409 + ... + 3481742.

It is an arithmetic number, because the mean of its divisors is an integer number (1357424640).

Almost surely, 2^8123663217 is an apocalyptic number.

It is an amenable number.

8123663217 is a deficient number, since it is larger than the sum of its proper divisors (2735733903).

8123663217 is a wasteful number, since it uses less digits than its factorization.

8123663217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6961543.

The product of its digits is 72576, while the sum is 39.

The square root of 8123663217 is about 90131.3664436527. The cubic root of 8123663217 is about 2010.2526201635.

Subtracting from 8123663217 its reverse (7123663218), we obtain a palindrome (999999999).

It can be divided in two parts, 81236 and 63217, that added together give a triangular number (144453 = T₅₃₇).

The spelling of 8123663217 in words is "eight billion, one hundred twenty-three million, six hundred sixty-three thousand, two hundred seventeen".