8609845 has 8 divisors (see below), whose sum is σ = 10501560. Its totient is φ = 6774720.

The previous prime is 8609833. The next prime is 8609849. The reversal of 8609845 is 5489068.

It can be written as a sum of positive squares in 4 ways, for example, as 758641 + 7851204 = 871^2 + 2802^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8609845 - 2⁵ = 8609813 is a prime.

8609845 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8609798 and 8609807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8609849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13810 + ... + 14419.

It is an arithmetic number, because the mean of its divisors is an integer number (1312695).

Almost surely, 2^8609845 is an apocalyptic number.

It is an amenable number.

8609845 is a deficient number, since it is larger than the sum of its proper divisors (1891715).

8609845 is a wasteful number, since it uses less digits than its factorization.

8609845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28295.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 8609845 is about 2934.2537381760. The cubic root of 8609845 is about 204.9581116079.

The spelling of 8609845 in words is "eight million, six hundred nine thousand, eight hundred forty-five".