6927689 has 2 divisors, whose sum is σ = 6927690. Its totient is φ = 6927688.

The previous prime is 6927667. The next prime is 6927703. The reversal of 6927689 is 9867296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6801664 + 126025 = 2608^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 6927689 - 2¹² = 6923593 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 6 + 9³ + 2⁷ + 7² + 6⁶ + 8⁷ + 9⁷ .

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6927889) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3463844 + 3463845.

It is an arithmetic number, because the mean of its divisors is an integer number (3463845).

Almost surely, 2^6927689 is an apocalyptic number.

It is an amenable number.

6927689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6927689 is an equidigital number, since it uses as much as digits as its factorization.

6927689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 6927689 is about 2632.0503414639. The cubic root of 6927689 is about 190.6321419522.

The spelling of 6927689 in words is "six million, nine hundred twenty-seven thousand, six hundred eighty-nine".