8719637641 has 27 divisors (see below), whose sum is σ = 10394286357. Its totient is φ = 7305972960.

The previous prime is 8719637627. The next prime is 8719637651. The reversal of 8719637641 is 1467369178.

The square root of 8719637641 is 93379.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3384796041 + 5334841600 = 58179^2 + 73040^2 .

It is not a de Polignac number, because 8719637641 - 2¹⁹ = 8719113353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8719637651) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13352871 + ... + 13353523.

Almost surely, 2^8719637641 is an apocalyptic number.

8719637641 is the 93379-th square number.

8719637641 is the 46690-th centered octagonal number.

It is an amenable number.

8719637641 is a deficient number, since it is larger than the sum of its proper divisors (1674648716).

8719637641 is an equidigital number, since it uses as much as digits as its factorization.

8719637641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 677 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 52.

The cubic root of 8719637641 is about 2058.2564221185.

It can be divided in two parts, 8719637 and 641, that added together give a palindrome (8720278).

The spelling of 8719637641 in words is "eight billion, seven hundred nineteen million, six hundred thirty-seven thousand, six hundred forty-one".