8904561 has 8 divisors (see below), whose sum is σ = 11924640. Its totient is φ = 5910432.

The previous prime is 8904557. The next prime is 8904587. The reversal of 8904561 is 1654098.

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

It is not a de Polignac number, because 8904561 - 2² = 8904557 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8904541) 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, 5671 + ... + 7068.

It is an arithmetic number, because the mean of its divisors is an integer number (1490580).

Almost surely, 2^8904561 is an apocalyptic number.

It is an amenable number.

8904561 is a deficient number, since it is larger than the sum of its proper divisors (3020079).

8904561 is a wasteful number, since it uses less digits than its factorization.

8904561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12975.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 8904561 is about 2984.0511054605. The cubic root of 8904561 is about 207.2705044845.

The spelling of 8904561 in words is "eight million, nine hundred four thousand, five hundred sixty-one".