8217863616 has 56 divisors (see below), whose sum is σ = 22111655040. Its totient is φ = 2692855552.

The previous prime is 8217863609. The next prime is 8217863623. The reversal of 8217863616 is 6163687128.

It is an interprime number because it is at equal distance from previous prime (8217863609) and next prime (8217863623).

It is a super-2 number, since 2×8217863616² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 351396 + ... + 374051.

Almost surely, 2^8217863616 is an apocalyptic number.

It is an amenable number.

8217863616 is an abundant number, since it is smaller than the sum of its proper divisors (13893791424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8217863616 is a wasteful number, since it uses less digits than its factorization.

8217863616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725521 (or 725511 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 8217863616 is about 90652.4330396046. The cubic root of 8217863616 is about 2017.9929429075.

The spelling of 8217863616 in words is "eight billion, two hundred seventeen million, eight hundred sixty-three thousand, six hundred sixteen".