6669617 has 2 divisors, whose sum is σ = 6669618. Its totient is φ = 6669616.

The previous prime is 6669587. The next prime is 6669643. The reversal of 6669617 is 7169666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6145441 + 524176 = 2479^2 + 724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6669617 is a prime.

It is not a weakly prime, because it can be changed into another prime (6669647) 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, 3334808 + 3334809.

It is an arithmetic number, because the mean of its divisors is an integer number (3334809).

Almost surely, 2^6669617 is an apocalyptic number.

It is an amenable number.

6669617 is a deficient number, since it is larger than the sum of its proper divisors (1).

6669617 is an equidigital number, since it uses as much as digits as its factorization.

6669617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 6669617 is about 2582.5601638684. The cubic root of 6669617 is about 188.2349653812.

The spelling of 6669617 in words is "six million, six hundred sixty-nine thousand, six hundred seventeen".