6654636 has 120 divisors (see below), whose sum is σ = 19514880. Its totient is φ = 1967328.

The previous prime is 6654581. The next prime is 6654643. The reversal of 6654636 is 6364566.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6654636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 141565 + ... + 141611.

It is an arithmetic number, because the mean of its divisors is an integer number (162624).

Almost surely, 2^6654636 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 6654636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9757440).

6654636 is an abundant number, since it is smaller than the sum of its proper divisors (12860244).

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

6654636 is a wasteful number, since it uses less digits than its factorization.

6654636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 94 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 6654636 is about 2579.6581168829. The cubic root of 6654636 is about 188.0939246987.

The spelling of 6654636 in words is "six million, six hundred fifty-four thousand, six hundred thirty-six".