6404500 has 24 divisors (see below), whose sum is σ = 13988520. Its totient is φ = 2561600.

The previous prime is 6404477. The next prime is 6404521. The reversal of 6404500 is 54046.

It can be written as a sum of positive squares in 4 ways, for example, as 586756 + 5817744 = 766^2 + 2412^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5905 + ... + 6904.

It is an arithmetic number, because the mean of its divisors is an integer number (582855).

Almost surely, 2^6404500 is an apocalyptic number.

It is an amenable number.

6404500 is an abundant number, since it is smaller than the sum of its proper divisors (7584020).

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

6404500 is a wasteful number, since it uses less digits than its factorization.

6404500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12828 (or 12816 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 6404500 is about 2530.7113624434. The cubic root of 6404500 is about 185.7070580450.

Adding to 6404500 its reverse (54046), we get a palindrome (6458546).

The spelling of 6404500 in words is "six million, four hundred four thousand, five hundred".