8556913 has 4 divisors (see below), whose sum is σ = 8608320. Its totient is φ = 8505508.

The previous prime is 8556907. The next prime is 8556923. The reversal of 8556913 is 3196558.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3196558 = 2 ⋅1598279.

It is a cyclic number.

It is not a de Polignac number, because 8556913 - 2¹³ = 8548721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8556923) 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, 25453 + ... + 25786.

It is an arithmetic number, because the mean of its divisors is an integer number (2152080).

Almost surely, 2^8556913 is an apocalyptic number.

It is an amenable number.

8556913 is a deficient number, since it is larger than the sum of its proper divisors (51407).

8556913 is a wasteful number, since it uses less digits than its factorization.

8556913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51406.

The product of its digits is 32400, while the sum is 37.

The square root of 8556913 is about 2925.2201626544. The cubic root of 8556913 is about 204.5372309631.

It can be divided in two parts, 85 and 56913, that multiplied together give a triangular number (4837605 = T₃₁₁₀).

The spelling of 8556913 in words is "eight million, five hundred fifty-six thousand, nine hundred thirteen".