406604805 has 32 divisors (see below), whose sum is σ = 657206784. Its totient is φ = 214657536.

The previous prime is 406604801. The next prime is 406604839. The reversal of 406604805 is 508406604.

It is a happy number.

406604805 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 406604805 - 2² = 406604801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406604801) 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 31 ways as a sum of consecutive naturals, for example, 1107732 + ... + 1108098.

It is an arithmetic number, because the mean of its divisors is an integer number (20537712).

Almost surely, 2^406604805 is an apocalyptic number.

It is an amenable number.

406604805 is a deficient number, since it is larger than the sum of its proper divisors (250601979).

406604805 is a wasteful number, since it uses less digits than its factorization.

406604805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 406604805 is about 20164.4440786251. Note that the first 3 decimals coincide. The cubic root of 406604805 is about 740.8395663460.

The spelling of 406604805 in words is "four hundred six million, six hundred four thousand, eight hundred five".