6840555 has 8 divisors (see below), whose sum is σ = 10944912. Its totient is φ = 3648288.

The previous prime is 6840541. The next prime is 6840557. The reversal of 6840555 is 5550486.

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

It is not a de Polignac number, because 6840555 - 2⁸ = 6840299 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6840557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228004 + ... + 228033.

It is an arithmetic number, because the mean of its divisors is an integer number (1368114).

Almost surely, 2^6840555 is an apocalyptic number.

6840555 is a deficient number, since it is larger than the sum of its proper divisors (4104357).

6840555 is a wasteful number, since it uses less digits than its factorization.

6840555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456045.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 6840555 is about 2615.4454687491. The cubic root of 6840555 is about 189.8295331612.

The spelling of 6840555 in words is "six million, eight hundred forty thousand, five hundred fifty-five".