6891673 has 2 divisors, whose sum is σ = 6891674. Its totient is φ = 6891672.

The previous prime is 6891637. The next prime is 6891691. The reversal of 6891673 is 3761986.

Together with previous prime (6891637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4112784 + 2778889 = 2028^2 + 1667^2 .

It is a cyclic number.

It is not a de Polignac number, because 6891673 - 2⁹ = 6891161 is a prime.

It is not a weakly prime, because it can be changed into another prime (6891173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445836 + 3445837.

It is an arithmetic number, because the mean of its divisors is an integer number (3445837).

Almost surely, 2^6891673 is an apocalyptic number.

It is an amenable number.

6891673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6891673 is an equidigital number, since it uses as much as digits as its factorization.

6891673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 6891673 is about 2625.1996114581. The cubic root of 6891673 is about 190.3012119791.

The spelling of 6891673 in words is "six million, eight hundred ninety-one thousand, six hundred seventy-three".