1604356 has 12 divisors (see below), whose sum is σ = 3023692. Its totient is φ = 740448.

The previous prime is 1604347. The next prime is 1604359. The reversal of 1604356 is 6534061.

It can be written as a sum of positive squares in 2 ways, for example, as 202500 + 1401856 = 450^2 + 1184^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1604356.

It is not an unprimeable number, because it can be changed into a prime (1604359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15375 + ... + 15478.

2^1604356 is an apocalyptic number.

It is an amenable number.

1604356 is a deficient number, since it is larger than the sum of its proper divisors (1419336).

1604356 is a wasteful number, since it uses less digits than its factorization.

1604356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30870 (or 30868 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1604356 is about 1266.6317539048. The cubic root of 1604356 is about 117.0667551941.

The spelling of 1604356 in words is "one million, six hundred four thousand, three hundred fifty-six".