6404594 has 12 divisors (see below), whose sum is σ = 11175534. Its totient is φ = 2744784.

The previous prime is 6404591. The next prime is 6404599. The reversal of 6404594 is 4954046.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4264225 + 2140369 = 2065^2 + 1463^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6404594.

It is not an unprimeable number, because it can be changed into a prime (6404591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32579 + ... + 32774.

Almost surely, 2^6404594 is an apocalyptic number.

6404594 is a deficient number, since it is larger than the sum of its proper divisors (4770940).

6404594 is a wasteful number, since it uses less digits than its factorization.

6404594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65369 (or 65362 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6404594 is about 2530.7299342285. The cubic root of 6404594 is about 185.7079665925.

The spelling of 6404594 in words is "six million, four hundred four thousand, five hundred ninety-four".