8558961 has 4 divisors (see below), whose sum is σ = 11411952. Its totient is φ = 5705972.

The previous prime is 8558941. The next prime is 8558999. The reversal of 8558961 is 1698558.

8558961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8558961 - 2⁵ = 8558929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8558941) 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, 1426491 + ... + 1426496.

It is an arithmetic number, because the mean of its divisors is an integer number (2852988).

Almost surely, 2^8558961 is an apocalyptic number.

It is an amenable number.

8558961 is a deficient number, since it is larger than the sum of its proper divisors (2852991).

8558961 is a wasteful number, since it uses less digits than its factorization.

8558961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852990.

The product of its digits is 86400, while the sum is 42.

The square root of 8558961 is about 2925.5702008327. The cubic root of 8558961 is about 204.5535475496.

It can be divided in two parts, 855 and 8961, that multiplied together give a triangular number (7661655 = T₃₉₁₄).

The spelling of 8558961 in words is "eight million, five hundred fifty-eight thousand, nine hundred sixty-one".