8561808 has 40 divisors (see below), whose sum is σ = 24576800. Its totient is φ = 2853792.

The previous prime is 8561807. The next prime is 8561809. The reversal of 8561808 is 8081658.

It is an interprime number because it is at equal distance from previous prime (8561807) and next prime (8561809).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (8561801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9478 + ... + 10341.

It is an arithmetic number, because the mean of its divisors is an integer number (614420).

Almost surely, 2^8561808 is an apocalyptic number.

It is an amenable number.

8561808 is an abundant number, since it is smaller than the sum of its proper divisors (16014992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8561808 is a wasteful number, since it uses less digits than its factorization.

8561808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19836 (or 19824 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 8561808 is about 2926.0567321910. The cubic root of 8561808 is about 204.5762255121.

The spelling of 8561808 in words is "eight million, five hundred sixty-one thousand, eight hundred eight".