8621616744 has 96 divisors (see below), whose sum is σ = 25274569320. Its totient is φ = 2639282688.

The previous prime is 8621616727. The next prime is 8621616761. The reversal of 8621616744 is 4476161268.

8621616744 is a `hidden beast` number, since 8 + 6 + 21 + 616 + 7 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (8621616727) and next prime (8621616761).

It can be written as a sum of positive squares in 4 ways, for example, as 8618894244 + 2722500 = 92838^2 + 1650^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8621616744.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161014 + ... + 207770.

Almost surely, 2^8621616744 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 8621616744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12637284660).

8621616744 is an abundant number, since it is smaller than the sum of its proper divisors (16652952576).

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

8621616744 is a wasteful number, since it uses less digits than its factorization.

8621616744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46979 (or 46972 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 8621616744 is about 92852.6614804336. The cubic root of 8621616744 is about 2050.5147820036.

The spelling of 8621616744 in words is "eight billion, six hundred twenty-one million, six hundred sixteen thousand, seven hundred forty-four".