1604573 has 2 divisors, whose sum is σ = 1604574. Its totient is φ = 1604572.

The previous prime is 1604567. The next prime is 1604593. The reversal of 1604573 is 3754061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1352569 + 252004 = 1163^2 + 502^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604573 - 2⁴ = 1604557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802286 + 802287.

It is an arithmetic number, because the mean of its divisors is an integer number (802287).

2^1604573 is an apocalyptic number.

It is an amenable number.

1604573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604573 is an equidigital number, since it uses as much as digits as its factorization.

1604573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1604573 is about 1266.7174112642. The cubic root of 1604573 is about 117.0720329796.

The spelling of 1604573 in words is "one million, six hundred four thousand, five hundred seventy-three".