6420219 has 8 divisors (see below), whose sum is σ = 9218832. Its totient is φ = 3950880.

The previous prime is 6420199. The next prime is 6420221. The reversal of 6420219 is 9120246.

6420219 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6420219 - 2¹¹ = 6418171 is a prime.

It is a super-2 number, since 2×6420219² = 82438424015922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6420259) 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, 82272 + ... + 82349.

It is an arithmetic number, because the mean of its divisors is an integer number (1152354).

Almost surely, 2^6420219 is an apocalyptic number.

6420219 is a deficient number, since it is larger than the sum of its proper divisors (2798613).

6420219 is a wasteful number, since it uses less digits than its factorization.

6420219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164637.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 6420219 is about 2533.8151076983. The cubic root of 6420219 is about 185.8588650708.

The spelling of 6420219 in words is "six million, four hundred twenty thousand, two hundred nineteen".