6666020 has 24 divisors (see below), whose sum is σ = 14179200. Its totient is φ = 2632032.

The previous prime is 6666001. The next prime is 6666029. The reversal of 6666020 is 206666.

It is not an unprimeable number, because it can be changed into a prime (6666029) 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, 530 + ... + 3689.

It is an arithmetic number, because the mean of its divisors is an integer number (590800).

Almost surely, 2^6666020 is an apocalyptic number.

It is an amenable number.

6666020 is an abundant number, since it is smaller than the sum of its proper divisors (7513180).

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

6666020 is a wasteful number, since it uses less digits than its factorization.

6666020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4305 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 6666020 is about 2581.8636679732. The cubic root of 6666020 is about 188.2011202131.

The spelling of 6666020 in words is "six million, six hundred sixty-six thousand, twenty".