6566197 has 4 divisors (see below), whose sum is σ = 7163136. Its totient is φ = 5969260.

The previous prime is 6566179. The next prime is 6566227. The reversal of 6566197 is 7916656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6566197 - 2⁷ = 6566069 is a prime.

It is a super-2 number, since 2×6566197² = 86229886085618, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298453 + ... + 298474.

It is an arithmetic number, because the mean of its divisors is an integer number (1790784).

Almost surely, 2^6566197 is an apocalyptic number.

It is an amenable number.

6566197 is a deficient number, since it is larger than the sum of its proper divisors (596939).

6566197 is a wasteful number, since it uses less digits than its factorization.

6566197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596938.

The product of its digits is 68040, while the sum is 40.

The square root of 6566197 is about 2562.4591704064. The cubic root of 6566197 is about 187.2569603646.

The spelling of 6566197 in words is "six million, five hundred sixty-six thousand, one hundred ninety-seven".