6840418 has 32 divisors (see below), whose sum is σ = 11874240. Its totient is φ = 2928960.

The previous prime is 6840413. The next prime is 6840439. The reversal of 6840418 is 8140486.

It is a self number, because there is not a number n which added to its sum of digits gives 6840418.

It is not an unprimeable number, because it can be changed into a prime (6840413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30021 + ... + 30247.

It is an arithmetic number, because the mean of its divisors is an integer number (371070).

Almost surely, 2^6840418 is an apocalyptic number.

6840418 is a deficient number, since it is larger than the sum of its proper divisors (5033822).

6840418 is a wasteful number, since it uses less digits than its factorization.

6840418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 6840418 is about 2615.4192780508. The cubic root of 6840418 is about 189.8282658751.

The spelling of 6840418 in words is "six million, eight hundred forty thousand, four hundred eighteen".