6404205 has 16 divisors (see below), whose sum is σ = 10486080. Its totient is φ = 3335808.

The previous prime is 6404191. The next prime is 6404227. The reversal of 6404205 is 5024046.

It is a happy number.

It is not a de Polignac number, because 6404205 - 2⁶ = 6404141 is a prime.

6404205 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4320 + ... + 5609.

It is an arithmetic number, because the mean of its divisors is an integer number (655380).

Almost surely, 2^6404205 is an apocalyptic number.

It is an amenable number.

6404205 is a deficient number, since it is larger than the sum of its proper divisors (4081875).

6404205 is a wasteful number, since it uses less digits than its factorization.

6404205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9980.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 6404205 is about 2530.6530777647. The cubic root of 6404205 is about 185.7042066945.

The spelling of 6404205 in words is "six million, four hundred four thousand, two hundred five".