1604275 has 6 divisors (see below), whose sum is σ = 1989332. Its totient is φ = 1283400.

The previous prime is 1604263. The next prime is 1604279. The reversal of 1604275 is 5724061.

It is not a de Polignac number, because 1604275 - 2⁵ = 1604243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 64171 = 1604275 / (1 + 6 + 0 + 4 + 2 + 7 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32061 + ... + 32110.

2^1604275 is an apocalyptic number.

1604275 is a deficient number, since it is larger than the sum of its proper divisors (385057).

1604275 is an equidigital number, since it uses as much as digits as its factorization.

1604275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64181 (or 64176 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1604275 is about 1266.5997789357. The cubic root of 1604275 is about 117.0647850232.

The spelling of 1604275 in words is "one million, six hundred four thousand, two hundred seventy-five".