6865789 has 4 divisors (see below), whose sum is σ = 7846624. Its totient is φ = 5884956.

The previous prime is 6865769. The next prime is 6865847. The reversal of 6865789 is 9875686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9875686 = 2 ⋅4937843.

It is not a de Polignac number, because 6865789 - 2⁹ = 6865277 is a prime.

It is a Duffinian number.

6865789 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6865709) 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 in 3 ways as a sum of consecutive naturals, for example, 490407 + ... + 490420.

It is an arithmetic number, because the mean of its divisors is an integer number (1961656).

Almost surely, 2^6865789 is an apocalyptic number.

It is an amenable number.

6865789 is a deficient number, since it is larger than the sum of its proper divisors (980835).

6865789 is an equidigital number, since it uses as much as digits as its factorization.

6865789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980834.

The product of its digits is 725760, while the sum is 49.

The square root of 6865789 is about 2620.2650629278. The cubic root of 6865789 is about 190.0626663096.

The spelling of 6865789 in words is "six million, eight hundred sixty-five thousand, seven hundred eighty-nine".