6564874 has 4 divisors (see below), whose sum is σ = 9847314. Its totient is φ = 3282436.

The previous prime is 6564847. The next prime is 6564917. The reversal of 6564874 is 4784656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4809249 + 1755625 = 2193^2 + 1325^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1641217 + ... + 1641220.

Almost surely, 2^6564874 is an apocalyptic number.

6564874 is a deficient number, since it is larger than the sum of its proper divisors (3282440).

6564874 is a wasteful number, since it uses less digits than its factorization.

6564874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282439.

The product of its digits is 161280, while the sum is 40.

The square root of 6564874 is about 2562.2010069470. The cubic root of 6564874 is about 187.2443829372.

The spelling of 6564874 in words is "six million, five hundred sixty-four thousand, eight hundred seventy-four".