6566245 has 12 divisors (see below), whose sum is σ = 9166284. Its totient is φ = 4502400.

The previous prime is 6566237. The next prime is 6566249. The reversal of 6566245 is 5426656.

It can be written as a sum of positive squares in 2 ways, for example, as 2244004 + 4322241 = 1498^2 + 2079^2 .

It is not a de Polignac number, because 6566245 - 2³ = 6566237 is a prime.

It is a Duffinian number.

6566245 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6566245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13156 + ... + 13645.

It is an arithmetic number, because the mean of its divisors is an integer number (763857).

Almost surely, 2^6566245 is an apocalyptic number.

It is an amenable number.

6566245 is a deficient number, since it is larger than the sum of its proper divisors (2600039).

6566245 is a wasteful number, since it uses less digits than its factorization.

6566245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26820 (or 26813 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 6566245 is about 2562.4685363922. The cubic root of 6566245 is about 187.2574166568.

The spelling of 6566245 in words is "six million, five hundred sixty-six thousand, two hundred forty-five".