8730561 has 16 divisors (see below), whose sum is σ = 13733888. Its totient is φ = 4827600.

The previous prime is 8730559. The next prime is 8730577. The reversal of 8730561 is 1650378.

It is not a de Polignac number, because 8730561 - 2¹ = 8730559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8730511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6055 + ... + 7356.

It is an arithmetic number, because the mean of its divisors is an integer number (858368).

Almost surely, 2^8730561 is an apocalyptic number.

It is an amenable number.

8730561 is a deficient number, since it is larger than the sum of its proper divisors (5003327).

8730561 is a wasteful number, since it uses less digits than its factorization.

8730561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13452.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 8730561 is about 2954.7522738802. The cubic root of 8730561 is about 205.9115543902.

The spelling of 8730561 in words is "eight million, seven hundred thirty thousand, five hundred sixty-one".