6690923 has 2 divisors, whose sum is σ = 6690924. Its totient is φ = 6690922.

The previous prime is 6690899. The next prime is 6690941. The reversal of 6690923 is 3290966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6690923 - 2¹⁴ = 6674539 is a prime.

It is not a weakly prime, because it can be changed into another prime (6690973) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345461 + 3345462.

It is an arithmetic number, because the mean of its divisors is an integer number (3345462).

Almost surely, 2^6690923 is an apocalyptic number.

6690923 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690923 is an equidigital number, since it uses as much as digits as its factorization.

6690923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 6690923 is about 2586.6818513300. The cubic root of 6690923 is about 188.4351903318.

The spelling of 6690923 in words is "six million, six hundred ninety thousand, nine hundred twenty-three".