6812889 has 8 divisors (see below), whose sum is σ = 9193632. Its totient is φ = 4487040.

The previous prime is 6812879. The next prime is 6812891. The reversal of 6812889 is 9882186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6812889 - 2⁵ = 6812857 is a prime.

It is a Curzon number.

6812889 is a lucky number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 6812889.

It is not an unprimeable number, because it can be changed into a prime (6812809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13432 + ... + 13929.

It is an arithmetic number, because the mean of its divisors is an integer number (1149204).

Almost surely, 2^6812889 is an apocalyptic number.

It is an amenable number.

6812889 is a deficient number, since it is larger than the sum of its proper divisors (2380743).

6812889 is a wasteful number, since it uses less digits than its factorization.

6812889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27447.

The product of its digits is 55296, while the sum is 42.

The square root of 6812889 is about 2610.1511450489. The cubic root of 6812889 is about 189.5732713038.

It can be divided in two parts, 681 and 2889, that added together give a triangular number (3570 = T₈₄).

The spelling of 6812889 in words is "six million, eight hundred twelve thousand, eight hundred eighty-nine".