1604495 has 4 divisors (see below), whose sum is σ = 1925400. Its totient is φ = 1283592.

The previous prime is 1604479. The next prime is 1604497. The reversal of 1604495 is 5944061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1604495 - 2⁴ = 1604479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604497) 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 in 3 ways as a sum of consecutive naturals, for example, 160445 + ... + 160454.

It is an arithmetic number, because the mean of its divisors is an integer number (481350).

2^1604495 is an apocalyptic number.

1604495 is a deficient number, since it is larger than the sum of its proper divisors (320905).

1604495 is an equidigital number, since it uses as much as digits as its factorization.

1604495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320904.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1604495 is about 1266.6866226498. The cubic root of 1604495 is about 117.0701359502.

The spelling of 1604495 in words is "one million, six hundred four thousand, four hundred ninety-five".