6840115 has 8 divisors (see below), whose sum is σ = 8234928. Its totient is φ = 5454240.

The previous prime is 6840109. The next prime is 6840157. The reversal of 6840115 is 5110486.

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

It is not a de Polignac number, because 6840115 - 2⁵ = 6840083 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 6840115.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 412 + ... + 3721.

It is an arithmetic number, because the mean of its divisors is an integer number (1029366).

Almost surely, 2^6840115 is an apocalyptic number.

6840115 is a deficient number, since it is larger than the sum of its proper divisors (1394813).

6840115 is a wasteful number, since it uses less digits than its factorization.

6840115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 6840115 is about 2615.3613517065. The cubic root of 6840115 is about 189.8254629853.

The spelling of 6840115 in words is "six million, eight hundred forty thousand, one hundred fifteen".