6845869 has 2 divisors, whose sum is σ = 6845870. Its totient is φ = 6845868.

The previous prime is 6845843. The next prime is 6845873. The reversal of 6845869 is 9685486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5116644 + 1729225 = 2262^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 6845869 - 2¹¹ = 6843821 is a prime.

It is a super-2 number, since 2×6845869² = 93731844730322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6845809) 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, 3422934 + 3422935.

It is an arithmetic number, because the mean of its divisors is an integer number (3422935).

Almost surely, 2^6845869 is an apocalyptic number.

It is an amenable number.

6845869 is a deficient number, since it is larger than the sum of its proper divisors (1).

6845869 is an equidigital number, since it uses as much as digits as its factorization.

6845869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 46.

The square root of 6845869 is about 2616.4611596582. The cubic root of 6845869 is about 189.8786760080.

The spelling of 6845869 in words is "six million, eight hundred forty-five thousand, eight hundred sixty-nine".