8965561 has 8 divisors (see below), whose sum is σ = 10206144. Its totient is φ = 7795920.

The previous prime is 8965559. The next prime is 8965589. The reversal of 8965561 is 1655698.

8965561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8965561 - 2¹ = 8965559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8965591) 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, 17466 + ... + 17971.

It is an arithmetic number, because the mean of its divisors is an integer number (1275768).

Almost surely, 2^8965561 is an apocalyptic number.

It is an amenable number.

8965561 is a deficient number, since it is larger than the sum of its proper divisors (1240583).

8965561 is a wasteful number, since it uses less digits than its factorization.

8965561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35471.

The product of its digits is 64800, while the sum is 40.

The square root of 8965561 is about 2994.2546651880. The cubic root of 8965561 is about 207.7427246216.

It can be divided in two parts, 8 and 965561, that added together give a palindrome (965569).

The spelling of 8965561 in words is "eight million, nine hundred sixty-five thousand, five hundred sixty-one".