8639625841 has 32 divisors (see below), whose sum is σ = 10940645376. Its totient is φ = 6626760000.

The previous prime is 8639625781. The next prime is 8639625881. The reversal of 8639625841 is 1485269368.

It is not a de Polignac number, because 8639625841 - 2¹⁵ = 8639593073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8639625881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6291831 + ... + 6293203.

It is an arithmetic number, because the mean of its divisors is an integer number (341895168).

Almost surely, 2^8639625841 is an apocalyptic number.

It is an amenable number.

8639625841 is a deficient number, since it is larger than the sum of its proper divisors (2301019535).

8639625841 is a wasteful number, since it uses less digits than its factorization.

8639625841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613.

The product of its digits is 2488320, while the sum is 52.

The square root of 8639625841 is about 92949.5876322214. The cubic root of 8639625841 is about 2051.9415150803.

The spelling of 8639625841 in words is "eight billion, six hundred thirty-nine million, six hundred twenty-five thousand, eight hundred forty-one".