8717965 has 4 divisors (see below), whose sum is σ = 10461564. Its totient is φ = 6974368.

The previous prime is 8717963. The next prime is 8717981. The reversal of 8717965 is 5697178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5697178 = 2 ⋅2848589.

It can be written as a sum of positive squares in 2 ways, for example, as 5885476 + 2832489 = 2426^2 + 1683^2 .

It is a cyclic number.

It is not a de Polignac number, because 8717965 - 2¹ = 8717963 is a prime.

It is a Duffinian number.

8717965 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8717963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871792 + ... + 871801.

It is an arithmetic number, because the mean of its divisors is an integer number (2615391).

Almost surely, 2^8717965 is an apocalyptic number.

It is an amenable number.

8717965 is a deficient number, since it is larger than the sum of its proper divisors (1743599).

8717965 is a wasteful number, since it uses less digits than its factorization.

8717965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743598.

The product of its digits is 105840, while the sum is 43.

The square root of 8717965 is about 2952.6200229627. The cubic root of 8717965 is about 205.8124805631.

It can be divided in two parts, 871 and 7965, that added together give a square (8836 = 94²).

The spelling of 8717965 in words is "eight million, seven hundred seventeen thousand, nine hundred sixty-five".