6898609 has 2 divisors, whose sum is σ = 6898610. Its totient is φ = 6898608.

The previous prime is 6898601. The next prime is 6898621. The reversal of 6898609 is 9068986.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5049009 + 1849600 = 2247^2 + 1360^2 .

It is a cyclic number.

It is not a de Polignac number, because 6898609 - 2³ = 6898601 is a prime.

It is a super-2 number, since 2×6898609² = 95181612269762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6898601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3449304 + 3449305.

It is an arithmetic number, because the mean of its divisors is an integer number (3449305).

Almost surely, 2^6898609 is an apocalyptic number.

It is an amenable number.

6898609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6898609 is an equidigital number, since it uses as much as digits as its factorization.

6898609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 6898609 is about 2626.5203216423. The cubic root of 6898609 is about 190.3650323145.

The spelling of 6898609 in words is "six million, eight hundred ninety-eight thousand, six hundred nine".