6699491 has 2 divisors, whose sum is σ = 6699492. Its totient is φ = 6699490.

The previous prime is 6699481. The next prime is 6699541. The reversal of 6699491 is 1949966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6699491 - 2¹⁰ = 6698467 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (6699401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349745 + 3349746.

It is an arithmetic number, because the mean of its divisors is an integer number (3349746).

Almost surely, 2^6699491 is an apocalyptic number.

6699491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6699491 is an equidigital number, since it uses as much as digits as its factorization.

6699491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 44.

The square root of 6699491 is about 2588.3374973137. The cubic root of 6699491 is about 188.5155890078.

The spelling of 6699491 in words is "six million, six hundred ninety-nine thousand, four hundred ninety-one".