6561108 has 48 divisors (see below), whose sum is σ = 17248000. Its totient is φ = 2156544.

The previous prime is 6561103. The next prime is 6561127. The reversal of 6561108 is 8011656.

6561108 is a `hidden beast` number, since 656 + 1 + 1 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8148 + ... + 8916.

Almost surely, 2^6561108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6561108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8624000).

6561108 is an abundant number, since it is smaller than the sum of its proper divisors (10686892).

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

6561108 is a wasteful number, since it uses less digits than its factorization.

6561108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 6561108 is about 2561.4659865007. The cubic root of 6561108 is about 187.2085712709.

It can be divided in two parts, 656 and 1108, that added together give a square (1764 = 42²).

The spelling of 6561108 in words is "six million, five hundred sixty-one thousand, one hundred eight".