6840208 has 10 divisors (see below), whose sum is σ = 13252934. Its totient is φ = 3420096.

The previous prime is 6840203. The next prime is 6840221. The reversal of 6840208 is 8020486.

It can be written as a sum of positive squares in only one way, i.e., 5513104 + 1327104 = 2348^2 + 1152^2 .

It is not an unprimeable number, because it can be changed into a prime (6840203) 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 as a sum of consecutive naturals, namely, 213741 + ... + 213772.

Almost surely, 2^6840208 is an apocalyptic number.

It is an amenable number.

6840208 is a deficient number, since it is larger than the sum of its proper divisors (6412726).

6840208 is a wasteful number, since it uses less digits than its factorization.

6840208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427521 (or 427515 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 6840208 is about 2615.3791312160. The cubic root of 6840208 is about 189.8263232870.

The spelling of 6840208 in words is "six million, eight hundred forty thousand, two hundred eight".