6840889 has 8 divisors (see below), whose sum is σ = 7483968. Its totient is φ = 6201360.

The previous prime is 6840871. The next prime is 6840929. The reversal of 6840889 is 9880486.

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

It is not a de Polignac number, because 6840889 - 2⁵ = 6840857 is a prime.

It is a Duffinian number.

6840889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6840289) 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, 4719 + ... + 5995.

It is an arithmetic number, because the mean of its divisors is an integer number (935496).

Almost surely, 2^6840889 is an apocalyptic number.

It is an amenable number.

6840889 is a deficient number, since it is larger than the sum of its proper divisors (643079).

6840889 is a wasteful number, since it uses less digits than its factorization.

6840889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 6840889 is about 2615.5093194252. The cubic root of 6840889 is about 189.8326226781.

The spelling of 6840889 in words is "six million, eight hundred forty thousand, eight hundred eighty-nine".