6655420 has 24 divisors (see below), whose sum is σ = 14137200. Its totient is φ = 2631552.

The previous prime is 6655409. The next prime is 6655423. The reversal of 6655420 is 245566.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90 + ... + 3649.

It is an arithmetic number, because the mean of its divisors is an integer number (589050).

Almost surely, 2^6655420 is an apocalyptic number.

It is an amenable number.

6655420 is an abundant number, since it is smaller than the sum of its proper divisors (7481780).

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

6655420 is a wasteful number, since it uses less digits than its factorization.

6655420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837 (or 3835 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 6655420 is about 2579.8100705284. The cubic root of 6655420 is about 188.1013110203.

The spelling of 6655420 in words is "six million, six hundred fifty-five thousand, four hundred twenty".