8644161 has 16 divisors (see below), whose sum is σ = 11918016. Its totient is φ = 5569536.

The previous prime is 8644157. The next prime is 8644171. The reversal of 8644161 is 1614468.

It is not a de Polignac number, because 8644161 - 2² = 8644157 is a prime.

It is a super-4 number, since 4×8644161⁴ (a number of 29 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (8644171) 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, 14281 + ... + 14873.

It is an arithmetic number, because the mean of its divisors is an integer number (744876).

Almost surely, 2^8644161 is an apocalyptic number.

It is an amenable number.

8644161 is a deficient number, since it is larger than the sum of its proper divisors (3273855).

8644161 is a wasteful number, since it uses less digits than its factorization.

8644161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its digits is 4608, while the sum is 30.

The square root of 8644161 is about 2940.0954066152. The cubic root of 8644161 is about 205.2300491012.

The spelling of 8644161 in words is "eight million, six hundred forty-four thousand, one hundred sixty-one".