6400206 has 24 divisors (see below), whose sum is σ = 14191320. Its totient is φ = 2083536.

The previous prime is 6400201. The next prime is 6400231. The reversal of 6400206 is 6020046.

6400206 is a `hidden beast` number, since 640 + 0 + 20 + 6 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3361 + ... + 4908.

It is an arithmetic number, because the mean of its divisors is an integer number (591305).

Almost surely, 2^6400206 is an apocalyptic number.

6400206 is an abundant number, since it is smaller than the sum of its proper divisors (7791114).

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

6400206 is a wasteful number, since it uses less digits than its factorization.

6400206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8320 (or 8317 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 6400206 is about 2529.8628421320. The cubic root of 6400206 is about 185.6655453383.

The spelling of 6400206 in words is "six million, four hundred thousand, two hundred six".