6840422 has 4 divisors (see below), whose sum is σ = 10260636. Its totient is φ = 3420210.

The previous prime is 6840413. The next prime is 6840439. The reversal of 6840422 is 2240486.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 6840391 and 6840400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710104 + ... + 1710107.

It is an arithmetic number, because the mean of its divisors is an integer number (2565159).

Almost surely, 2^6840422 is an apocalyptic number.

6840422 is a deficient number, since it is larger than the sum of its proper divisors (3420214).

6840422 is a wasteful number, since it uses less digits than its factorization.

6840422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420213.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 6840422 is about 2615.4200427465. The cubic root of 6840422 is about 189.8283028764.

The spelling of 6840422 in words is "six million, eight hundred forty thousand, four hundred twenty-two".