6668207420 has 48 divisors (see below), whose sum is σ = 16084185600. Its totient is φ = 2274744384.

The previous prime is 6668207419. The next prime is 6668207437. The reversal of 6668207420 is 247028666.

It is a super-2 number, since 2×6668207420² = 88929980392286112800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91814 + ... + 147533.

It is an arithmetic number, because the mean of its divisors is an integer number (335087200).

Almost surely, 2^6668207420 is an apocalyptic number.

It is an amenable number.

6668207420 is an abundant number, since it is smaller than the sum of its proper divisors (9415978180).

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

6668207420 is a wasteful number, since it uses less digits than its factorization.

6668207420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239562 (or 239560 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 6668207420 is about 81659.0926964046. The cubic root of 6668207420 is about 1882.2170370336.

The spelling of 6668207420 in words is "six billion, six hundred sixty-eight million, two hundred seven thousand, four hundred twenty".