6420206 has 8 divisors (see below), whose sum is σ = 10371144. Its totient is φ = 2963160.

The previous prime is 6420199. The next prime is 6420221. The reversal of 6420206 is 6020246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123440 + ... + 123491.

It is an arithmetic number, because the mean of its divisors is an integer number (1296393).

Almost surely, 2^6420206 is an apocalyptic number.

6420206 is a deficient number, since it is larger than the sum of its proper divisors (3950938).

6420206 is a wasteful number, since it uses less digits than its factorization.

6420206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246946.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 6420206 is about 2533.8125423954. The cubic root of 6420206 is about 185.8587396251.

The spelling of 6420206 in words is "six million, four hundred twenty thousand, two hundred six".