8682641639 has 16 divisors (see below), whose sum is σ = 10021552128. Its totient is φ = 7368604992.

The previous prime is 8682641633. The next prime is 8682641677. The reversal of 8682641639 is 9361462868.

It is not a de Polignac number, because 8682641639 - 2⁴ = 8682641623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8682641633) 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, 437459 + ... + 456875.

It is an arithmetic number, because the mean of its divisors is an integer number (626347008).

Almost surely, 2^8682641639 is an apocalyptic number.

8682641639 is a deficient number, since it is larger than the sum of its proper divisors (1338910489).

8682641639 is a wasteful number, since it uses less digits than its factorization.

8682641639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20054.

The product of its digits is 2985984, while the sum is 53.

The square root of 8682641639 is about 93180.6934885119. The cubic root of 8682641639 is about 2055.3413465963.

The spelling of 8682641639 in words is "eight billion, six hundred eighty-two million, six hundred forty-one thousand, six hundred thirty-nine".