6885989 has 6 divisors (see below), whose sum is σ = 7569030. Its totient is φ = 6259880.

The previous prime is 6885973. The next prime is 6886027. The reversal of 6885989 is 9895886.

It can be written as a sum of positive squares in only one way, i.e., 5085025 + 1800964 = 2255^2 + 1342^2 .

It is not a de Polignac number, because 6885989 - 2⁴ = 6885973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6885989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6885889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28334 + ... + 28575.

It is an arithmetic number, because the mean of its divisors is an integer number (1261505).

Almost surely, 2^6885989 is an apocalyptic number.

It is an amenable number.

6885989 is a deficient number, since it is larger than the sum of its proper divisors (683041).

6885989 is a wasteful number, since it uses less digits than its factorization.

6885989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56931 (or 56920 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The square root of 6885989 is about 2624.1168038028. The cubic root of 6885989 is about 190.2488797612.

The spelling of 6885989 in words is "six million, eight hundred eighty-five thousand, nine hundred eighty-nine".