6646020 has 48 divisors (see below), whose sum is σ = 18724608. Its totient is φ = 1761280.

The previous prime is 6646019. The next prime is 6646039. The reversal of 6646020 is 206466.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15205 + ... + 15635.

It is an arithmetic number, because the mean of its divisors is an integer number (390096).

Almost surely, 2^6646020 is an apocalyptic number.

6646020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6646020 is an abundant number, since it is smaller than the sum of its proper divisors (12078588).

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

6646020 is a wasteful number, since it uses less digits than its factorization.

6646020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6646020 is about 2577.9875872471. The cubic root of 6646020 is about 188.0127122836.

The spelling of 6646020 in words is "six million, six hundred forty-six thousand, twenty".