6689420 has 24 divisors (see below), whose sum is σ = 14288400. Its totient is φ = 2629952.

The previous prime is 6689413. The next prime is 6689429. The reversal of 6689420 is 249866.

It is a super-4 number, since 4×6689420⁴ (a number of 28 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (6689429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655 + ... + 4014.

It is an arithmetic number, because the mean of its divisors is an integer number (595350).

Almost surely, 2^6689420 is an apocalyptic number.

It is an amenable number.

6689420 is an abundant number, since it is smaller than the sum of its proper divisors (7598980).

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

6689420 is a wasteful number, since it uses less digits than its factorization.

6689420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737 (or 5735 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 6689420 is about 2586.3913083677. The cubic root of 6689420 is about 188.4210797076.

The spelling of 6689420 in words is "six million, six hundred eighty-nine thousand, four hundred twenty".