6656597 has 2 divisors, whose sum is σ = 6656598. Its totient is φ = 6656596.

The previous prime is 6656569. The next prime is 6656603. The reversal of 6656597 is 7956566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6507601 + 148996 = 2551^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 6656597 - 2¹² = 6652501 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6656527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3328298 + 3328299.

It is an arithmetic number, because the mean of its divisors is an integer number (3328299).

Almost surely, 2^6656597 is an apocalyptic number.

It is an amenable number.

6656597 is a deficient number, since it is larger than the sum of its proper divisors (1).

6656597 is an equidigital number, since it uses as much as digits as its factorization.

6656597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 44.

The square root of 6656597 is about 2580.0381780121. The cubic root of 6656597 is about 188.1123988351.

The spelling of 6656597 in words is "six million, six hundred fifty-six thousand, five hundred ninety-seven".