8654561 has 4 divisors (see below), whose sum is σ = 8661252. Its totient is φ = 8647872.

The previous prime is 8654543. The next prime is 8654563. The reversal of 8654561 is 1654568.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1600225 + 7054336 = 1265^2 + 2656^2 .

It is a cyclic number.

It is not a de Polignac number, because 8654561 - 2¹⁰ = 8653537 is a prime.

It is a super-2 number, since 2×8654561² = 149802852205442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8654563) 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, 716 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (2165313).

Almost surely, 2^8654561 is an apocalyptic number.

It is an amenable number.

8654561 is a deficient number, since it is larger than the sum of its proper divisors (6691).

8654561 is a wasteful number, since it uses less digits than its factorization.

8654561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6690.

The product of its digits is 28800, while the sum is 35.

The square root of 8654561 is about 2941.8635250467. The cubic root of 8654561 is about 205.3123218671.

The spelling of 8654561 in words is "eight million, six hundred fifty-four thousand, five hundred sixty-one".