1609604 has 12 divisors (see below), whose sum is σ = 2965200. Its totient is φ = 762408.

The previous prime is 1609589. The next prime is 1609627. The reversal of 1609604 is 4069061.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10514 + ... + 10665.

It is an arithmetic number, because the mean of its divisors is an integer number (247100).

2^1609604 is an apocalyptic number.

It is an amenable number.

1609604 is a deficient number, since it is larger than the sum of its proper divisors (1355596).

1609604 is a wasteful number, since it uses less digits than its factorization.

1609604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202 (or 21200 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1609604 is about 1268.7016985880. The cubic root of 1609604 is about 117.1942617372.

The spelling of 1609604 in words is "one million, six hundred nine thousand, six hundred four".