8240816664 has 64 divisors (see below), whose sum is σ = 22947372000. Its totient is φ = 2740193280.

The previous prime is 8240816663. The next prime is 8240816669. The reversal of 8240816664 is 4666180428.

It is a super-2 number, since 2×8240816664² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240816663) 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, 41704 + ... + 134984.

Almost surely, 2^8240816664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8240816664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11473686000).

8240816664 is an abundant number, since it is smaller than the sum of its proper divisors (14706555336).

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

8240816664 is a wasteful number, since it uses less digits than its factorization.

8240816664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93705 (or 93695 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 8240816664 is about 90778.9439462698. The cubic root of 8240816664 is about 2019.8699932668.

The spelling of 8240816664 in words is "eight billion, two hundred forty million, eight hundred sixteen thousand, six hundred sixty-four".