8227216565 has 8 divisors (see below), whose sum is σ = 9874787328. Its totient is φ = 6580354960.

The previous prime is 8227216537. The next prime is 8227216601. The reversal of 8227216565 is 5656127228.

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

It is not a de Polignac number, because 8227216565 - 2¹⁰ = 8227215541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151421 + ... + 198450.

It is an arithmetic number, because the mean of its divisors is an integer number (1234348416).

Almost surely, 2^8227216565 is an apocalyptic number.

It is an amenable number.

8227216565 is a deficient number, since it is larger than the sum of its proper divisors (1647570763).

8227216565 is a wasteful number, since it uses less digits than its factorization.

8227216565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354579.

The product of its digits is 403200, while the sum is 44.

The square root of 8227216565 is about 90704.0052313017. The cubic root of 8227216565 is about 2018.7582281485.

The spelling of 8227216565 in words is "eight billion, two hundred twenty-seven million, two hundred sixteen thousand, five hundred sixty-five".