6898739 has 2 divisors, whose sum is σ = 6898740. Its totient is φ = 6898738.

The previous prime is 6898667. The next prime is 6898741. The reversal of 6898739 is 9378986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6898739 - 2⁸ = 6898483 is a prime.

Together with 6898741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6898769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3449369 + 3449370.

It is an arithmetic number, because the mean of its divisors is an integer number (3449370).

Almost surely, 2^6898739 is an apocalyptic number.

6898739 is a deficient number, since it is larger than the sum of its proper divisors (1).

6898739 is an equidigital number, since it uses as much as digits as its factorization.

6898739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 6898739 is about 2626.5450690974. The cubic root of 6898739 is about 190.3662280773.

The spelling of 6898739 in words is "six million, eight hundred ninety-eight thousand, seven hundred thirty-nine".