8644261 has 2 divisors, whose sum is σ = 8644262. Its totient is φ = 8644260.

The previous prime is 8644253. The next prime is 8644301. The reversal of 8644261 is 1624468.

8644261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7128900 + 1515361 = 2670^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 8644261 - 2³ = 8644253 is a prime.

It is a super-2 number, since 2×8644261² = 149446496472242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8644231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322130 + 4322131.

It is an arithmetic number, because the mean of its divisors is an integer number (4322131).

Almost surely, 2^8644261 is an apocalyptic number.

It is an amenable number.

8644261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8644261 is an equidigital number, since it uses as much as digits as its factorization.

8644261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 8644261 is about 2940.1124128169. The cubic root of 8644261 is about 205.2308404996.

The spelling of 8644261 in words is "eight million, six hundred forty-four thousand, two hundred sixty-one".