6742889 has 2 divisors, whose sum is σ = 6742890. Its totient is φ = 6742888.

The previous prime is 6742859. The next prime is 6742913. The reversal of 6742889 is 9882476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6165289 + 577600 = 2483^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 6742889 - 2²⁰ = 5694313 is a prime.

It is not a weakly prime, because it can be changed into another prime (6742859) 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, 3371444 + 3371445.

It is an arithmetic number, because the mean of its divisors is an integer number (3371445).

Almost surely, 2^6742889 is an apocalyptic number.

It is an amenable number.

6742889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6742889 is an equidigital number, since it uses as much as digits as its factorization.

6742889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 6742889 is about 2596.7073381496. The cubic root of 6742889 is about 188.9217689910.

The spelling of 6742889 in words is "six million, seven hundred forty-two thousand, eight hundred eighty-nine".