6858869 has 2 divisors, whose sum is σ = 6858870. Its totient is φ = 6858868.

The previous prime is 6858827. The next prime is 6858913. The reversal of 6858869 is 9688586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6436369 + 422500 = 2537^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 6858869 - 2⁸ = 6858613 is a prime.

It is a super-2 number, since 2×6858869² = 94088167918322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6858469) 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, 3429434 + 3429435.

It is an arithmetic number, because the mean of its divisors is an integer number (3429435).

Almost surely, 2^6858869 is an apocalyptic number.

It is an amenable number.

6858869 is a deficient number, since it is larger than the sum of its proper divisors (1).

6858869 is an equidigital number, since it uses as much as digits as its factorization.

6858869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 50.

The square root of 6858869 is about 2618.9442529386. The cubic root of 6858869 is about 189.9987903893.

The spelling of 6858869 in words is "six million, eight hundred fifty-eight thousand, eight hundred sixty-nine".