6905440 has 24 divisors (see below), whose sum is σ = 16314480. Its totient is φ = 2762112.

The previous prime is 6905411. The next prime is 6905443. The reversal of 6905440 is 445096.

It is a junction number, because it is equal to n+sod(n) for n = 6905399 and 6905408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6905443) 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 3 ways as a sum of consecutive naturals, for example, 21420 + ... + 21739.

It is an arithmetic number, because the mean of its divisors is an integer number (679770).

Almost surely, 2^6905440 is an apocalyptic number.

It is an amenable number.

6905440 is an abundant number, since it is smaller than the sum of its proper divisors (9409040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6905440 is a wasteful number, since it uses less digits than its factorization.

6905440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43174 (or 43166 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6905440 is about 2627.8203896005. The cubic root of 6905440 is about 190.4278447143.

The spelling of 6905440 in words is "six million, nine hundred five thousand, four hundred forty".