8556804 has 18 divisors (see below), whose sum is σ = 21629790. Its totient is φ = 2852256.

The previous prime is 8556791. The next prime is 8556817. The reversal of 8556804 is 4086558.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8556791) and next prime (8556817).

It can be written as a sum of positive squares in only one way, i.e., 7851204 + 705600 = 2802^2 + 840^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 237689 = 8556804 / (8 + 5 + 5 + 6 + 8 + 0 + 4).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118809 + ... + 118880.

It is an arithmetic number, because the mean of its divisors is an integer number (1201655).

Almost surely, 2^8556804 is an apocalyptic number.

It is an amenable number.

8556804 is an abundant number, since it is smaller than the sum of its proper divisors (13072986).

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

8556804 is a wasteful number, since it uses less digits than its factorization.

8556804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237699 (or 237694 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 8556804 is about 2925.2015315188. The cubic root of 8556804 is about 204.5363624780.

The spelling of 8556804 in words is "eight million, five hundred fifty-six thousand, eight hundred four".