8637963664 has 80 divisors (see below), whose sum is σ = 18950929920. Its totient is φ = 3778145280.

The previous prime is 8637963647. The next prime is 8637963679. The reversal of 8637963664 is 4663697368.

It is a super-2 number, since 2×8637963664² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a junction number, because it is equal to n+sod(n) for n = 8637963599 and 8637963608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1594849 + ... + 1600255.

It is an arithmetic number, because the mean of its divisors is an integer number (236886624).

Almost surely, 2^8637963664 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 8637963664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9475464960).

8637963664 is an abundant number, since it is smaller than the sum of its proper divisors (10312966256).

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

8637963664 is a wasteful number, since it uses less digits than its factorization.

8637963664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768 (or 5762 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 58.

The square root of 8637963664 is about 92940.6459198558. The cubic root of 8637963664 is about 2051.8099156798.

The spelling of 8637963664 in words is "eight billion, six hundred thirty-seven million, nine hundred sixty-three thousand, six hundred sixty-four".