8709145 has 8 divisors (see below), whose sum is σ = 10559304. Its totient is φ = 6895104.

The previous prime is 8709139. The next prime is 8709149. The reversal of 8709145 is 5419078.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3455881 + 5253264 = 1859^2 + 2292^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8709145 - 2¹³ = 8700953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8709145.

It is not an unprimeable number, because it can be changed into a prime (8709149) 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, 8494 + ... + 9463.

It is an arithmetic number, because the mean of its divisors is an integer number (1319913).

Almost surely, 2^8709145 is an apocalyptic number.

It is an amenable number.

8709145 is a deficient number, since it is larger than the sum of its proper divisors (1850159).

8709145 is a wasteful number, since it uses less digits than its factorization.

8709145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18059.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 8709145 is about 2951.1260562707. The cubic root of 8709145 is about 205.7430500407.

The spelling of 8709145 in words is "eight million, seven hundred nine thousand, one hundred forty-five".