6564545 has 16 divisors (see below), whose sum is σ = 8854272. Its totient is φ = 4635840.

The previous prime is 6564539. The next prime is 6564563. The reversal of 6564545 is 5454656.

It is not a de Polignac number, because 6564545 - 2⁸ = 6564289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701 + ... + 3690.

It is an arithmetic number, because the mean of its divisors is an integer number (553392).

Almost surely, 2^6564545 is an apocalyptic number.

6564545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6564545 is a deficient number, since it is larger than the sum of its proper divisors (2289727).

6564545 is a wasteful number, since it uses less digits than its factorization.

6564545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432.

The product of its digits is 72000, while the sum is 35.

The square root of 6564545 is about 2562.1368035294. The cubic root of 6564545 is about 187.2412549548.

The spelling of 6564545 in words is "six million, five hundred sixty-four thousand, five hundred forty-five".