6420204 has 72 divisors (see below), whose sum is σ = 18855200. Its totient is φ = 1804032.

The previous prime is 6420199. The next prime is 6420221. The reversal of 6420204 is 4020246.

6420204 is a `hidden beast` number, since 642 + 0 + 20 + 4 = 666.

6420204 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18222 + ... + 18570.

Almost surely, 2^6420204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6420204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9427600).

6420204 is an abundant number, since it is smaller than the sum of its proper divisors (12434996).

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

6420204 is a wasteful number, since it uses less digits than its factorization.

6420204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 6420204 is about 2533.8121477331. The cubic root of 6420204 is about 185.8587203258.

The spelling of 6420204 in words is "six million, four hundred twenty thousand, two hundred four".