6690090773 has 2 divisors, whose sum is σ = 6690090774. Its totient is φ = 6690090772.

The previous prime is 6690090739. The next prime is 6690090793. The reversal of 6690090773 is 3770900966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6668028964 + 22061809 = 81658^2 + 4697^2 .

It is a cyclic number.

It is not a de Polignac number, because 6690090773 - 2⁶ = 6690090709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6690090793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345045386 + 3345045387.

It is an arithmetic number, because the mean of its divisors is an integer number (3345045387).

Almost surely, 2^6690090773 is an apocalyptic number.

It is an amenable number.

6690090773 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690090773 is an equidigital number, since it uses as much as digits as its factorization.

6690090773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 47.

The square root of 6690090773 is about 81792.9750834386. The cubic root of 6690090773 is about 1884.2737739107.

The spelling of 6690090773 in words is "six billion, six hundred ninety million, ninety thousand, seven hundred seventy-three".