8645081 has 2 divisors, whose sum is σ = 8645082. Its totient is φ = 8645080.

The previous prime is 8645071. The next prime is 8645113. The reversal of 8645081 is 1805468.

It is an a-pointer prime, because the next prime (8645113) can be obtained adding 8645081 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8265625 + 379456 = 2875^2 + 616^2 .

It is a cyclic number.

It is not a de Polignac number, because 8645081 - 2¹⁰ = 8644057 is a prime.

It is a super-3 number, since 3×8645081³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8645011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322540 + 4322541.

It is an arithmetic number, because the mean of its divisors is an integer number (4322541).

Almost surely, 2^8645081 is an apocalyptic number.

It is an amenable number.

8645081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645081 is an equidigital number, since it uses as much as digits as its factorization.

8645081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 8645081 is about 2940.2518599603. The cubic root of 8645081 is about 205.2373297363.

The spelling of 8645081 in words is "eight million, six hundred forty-five thousand, eighty-one".