6506197 has 2 divisors, whose sum is σ = 6506198. Its totient is φ = 6506196.

The previous prime is 6506183. The next prime is 6506207. The reversal of 6506197 is 7916056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5044516 + 1461681 = 2246^2 + 1209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6506197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6506147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3253098 + 3253099.

It is an arithmetic number, because the mean of its divisors is an integer number (3253099).

Almost surely, 2^6506197 is an apocalyptic number.

It is an amenable number.

6506197 is a deficient number, since it is larger than the sum of its proper divisors (1).

6506197 is an equidigital number, since it uses as much as digits as its factorization.

6506197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 6506197 is about 2550.7247989542. The cubic root of 6506197 is about 186.6848476481.

The spelling of 6506197 in words is "six million, five hundred six thousand, one hundred ninety-seven".