6564361 has 6 divisors (see below), whose sum is σ = 6862730. Its totient is φ = 6278448.

The previous prime is 6564359. The next prime is 6564401. The reversal of 6564361 is 1634656.

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 2742336 = 1955^2 + 1656^2 .

It is not a de Polignac number, because 6564361 - 2¹ = 6564359 is a prime.

It is a Duffinian number.

6564361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6564301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5676 + ... + 6733.

Almost surely, 2^6564361 is an apocalyptic number.

It is an amenable number.

6564361 is a deficient number, since it is larger than the sum of its proper divisors (298369).

6564361 is a wasteful number, since it uses less digits than its factorization.

6564361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455 (or 12432 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 6564361 is about 2562.1008957494. The cubic root of 6564361 is about 187.2395055209.

The spelling of 6564361 in words is "six million, five hundred sixty-four thousand, three hundred sixty-one".