6564492 has 72 divisors (see below), whose sum is σ = 18384912. Its totient is φ = 1974720.

The previous prime is 6564461. The next prime is 6564511. The reversal of 6564492 is 2944656.

6564492 is a `hidden beast` number, since 6 + 5 + 644 + 9 + 2 = 666.

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

Its product of digits (51840) is a multiple of the sum of its prime factors (180).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47848 + ... + 47984.

It is an arithmetic number, because the mean of its divisors is an integer number (255346).

Almost surely, 2^6564492 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 6564492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9192456).

6564492 is an abundant number, since it is smaller than the sum of its proper divisors (11820420).

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

6564492 is a wasteful number, since it uses less digits than its factorization.

6564492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 153 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 6564492 is about 2562.1264605792. The cubic root of 6564492 is about 187.2407510451.

It can be divided in two parts, 6564 and 492, that added together give a square (7056 = 84²).

The spelling of 6564492 in words is "six million, five hundred sixty-four thousand, four hundred ninety-two".