1604368 has 20 divisors (see below), whose sum is σ = 3130380. Its totient is φ = 796544.

The previous prime is 1604359. The next prime is 1604381. The reversal of 1604368 is 8634061.

It can be written as a sum of positive squares in 2 ways, for example, as 1468944 + 135424 = 1212^2 + 368^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2898 + ... + 3406.

It is an arithmetic number, because the mean of its divisors is an integer number (156519).

2^1604368 is an apocalyptic number.

It is an amenable number.

1604368 is a deficient number, since it is larger than the sum of its proper divisors (1526012).

1604368 is a wasteful number, since it uses less digits than its factorization.

1604368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1604368 is about 1266.6364908686. The cubic root of 1604368 is about 117.0670470657.

Adding to 1604368 its product of nonzero digits (3456), we get a square (1607824 = 1268²).

The spelling of 1604368 in words is "one million, six hundred four thousand, three hundred sixty-eight".