6561324 has 120 divisors (see below), whose sum is σ = 21466368. Its totient is φ = 1697760.

The previous prime is 6561319. The next prime is 6561383. The reversal of 6561324 is 4231656.

6561324 is a `hidden beast` number, since 656 + 1 + 3 + 2 + 4 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24817 + ... + 25079.

Almost surely, 2^6561324 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 6561324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10733184).

6561324 is an abundant number, since it is smaller than the sum of its proper divisors (14905044).

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

6561324 is a wasteful number, since it uses less digits than its factorization.

6561324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 286 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 6561324 is about 2561.5081495088. The cubic root of 6561324 is about 187.2106256296.

It can be divided in two parts, 6561 and 324, that multiplied together give a square (2125764 = 1458²).

The spelling of 6561324 in words is "six million, five hundred sixty-one thousand, three hundred twenty-four".