6609456 has 120 divisors (see below), whose sum is σ = 21665280. Its totient is φ = 1842048.

The previous prime is 6609443. The next prime is 6609457. The reversal of 6609456 is 6549066.

It is a happy number.

6609456 is a `hidden beast` number, since 6 + 609 + 45 + 6 = 666.

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 6609456.

It is not an unprimeable number, because it can be changed into a prime (6609457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79591 + ... + 79673.

It is an arithmetic number, because the mean of its divisors is an integer number (180544).

Almost surely, 2^6609456 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 6609456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10832640).

6609456 is an abundant number, since it is smaller than the sum of its proper divisors (15055824).

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

6609456 is a wasteful number, since it uses less digits than its factorization.

6609456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6609456 is about 2570.8862285212. The cubic root of 6609456 is about 187.6672853722.

The spelling of 6609456 in words is "six million, six hundred nine thousand, four hundred fifty-six".