6564542 has 8 divisors (see below), whose sum is σ = 9889776. Its totient is φ = 3267952.

The previous prime is 6564539. The next prime is 6564563. The reversal of 6564542 is 2454656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 6² + 5 + 6⁵ + 4⁹ + 5⁵ + 4¹¹ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 6564499 and 6564508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6578 + ... + 7509.

It is an arithmetic number, because the mean of its divisors is an integer number (1236222).

Almost surely, 2^6564542 is an apocalyptic number.

6564542 is a deficient number, since it is larger than the sum of its proper divisors (3325234).

6564542 is a wasteful number, since it uses less digits than its factorization.

6564542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14322.

The product of its digits is 28800, while the sum is 32.

The square root of 6564542 is about 2562.1362180805. The cubic root of 6564542 is about 187.2412264317.

The spelling of 6564542 in words is "six million, five hundred sixty-four thousand, five hundred forty-two".