1604461 has 2 divisors, whose sum is σ = 1604462. Its totient is φ = 1604460.

The previous prime is 1604441. The next prime is 1604479. The reversal of 1604461 is 1644061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1322500 + 281961 = 1150^2 + 531^2 .

It is an emirp because it is prime and its reverse (1644061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1604461 - 2⁷ = 1604333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604441) 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, 802230 + 802231.

It is an arithmetic number, because the mean of its divisors is an integer number (802231).

2^1604461 is an apocalyptic number.

It is an amenable number.

1604461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604461 is an equidigital number, since it uses as much as digits as its factorization.

1604461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1604461 is about 1266.6732017375. The cubic root of 1604461 is about 117.0693090207.

The spelling of 1604461 in words is "one million, six hundred four thousand, four hundred sixty-one".