1604593 has 2 divisors, whose sum is σ = 1604594. Its totient is φ = 1604592.

The previous prime is 1604573. The next prime is 1604597. The reversal of 1604593 is 3954061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 47089 = 1248^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604593 - 2⁹ = 1604081 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604597) 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 as a sum of consecutive naturals, namely, 802296 + 802297.

It is an arithmetic number, because the mean of its divisors is an integer number (802297).

2^1604593 is an apocalyptic number.

It is an amenable number.

1604593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604593 is an equidigital number, since it uses as much as digits as its factorization.

1604593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1604593 is about 1266.7253056602. The cubic root of 1604593 is about 117.0725193875.

It can be divided in two parts, 1604 and 593, that added together give a cube (2197 = 13³).

The spelling of 1604593 in words is "one million, six hundred four thousand, five hundred ninety-three".