8644625113 has 4 divisors (see below), whose sum is σ = 8646652468. Its totient is φ = 8642597760.

The previous prime is 8644625107. The next prime is 8644625147. The reversal of 8644625113 is 3115264468.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1623525849 + 7021099264 = 40293^2 + 83792^2 .

It is a cyclic number.

It is not a de Polignac number, because 8644625113 - 2⁵ = 8644625081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8644625153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1007268 + ... + 1015813.

It is an arithmetic number, because the mean of its divisors is an integer number (2161663117).

Almost surely, 2^8644625113 is an apocalyptic number.

It is an amenable number.

8644625113 is a deficient number, since it is larger than the sum of its proper divisors (2027355).

8644625113 is a wasteful number, since it uses less digits than its factorization.

8644625113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027354.

The product of its digits is 138240, while the sum is 40.

The square root of 8644625113 is about 92976.4761270290. The cubic root of 8644625113 is about 2052.3372203252.

The spelling of 8644625113 in words is "eight billion, six hundred forty-four million, six hundred twenty-five thousand, one hundred thirteen".