6690353 has 2 divisors, whose sum is σ = 6690354. Its totient is φ = 6690352.

The previous prime is 6690347. The next prime is 6690361. The reversal of 6690353 is 3530966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4355569 + 2334784 = 2087^2 + 1528^2 .

It is a cyclic number.

It is not a de Polignac number, because 6690353 - 2⁶ = 6690289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6690323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345176 + 3345177.

It is an arithmetic number, because the mean of its divisors is an integer number (3345177).

Almost surely, 2^6690353 is an apocalyptic number.

It is an amenable number.

6690353 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690353 is an equidigital number, since it uses as much as digits as its factorization.

6690353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 6690353 is about 2586.5716692178. The cubic root of 6690353 is about 188.4298392461.

The spelling of 6690353 in words is "six million, six hundred ninety thousand, three hundred fifty-three".