1604265 has 32 divisors (see below), whose sum is σ = 2916480. Its totient is φ = 746496.

The previous prime is 1604263. The next prime is 1604279. The reversal of 1604265 is 5624061.

It is not a de Polignac number, because 1604265 - 2¹ = 1604263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1604263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3489 + ... + 3921.

It is an arithmetic number, because the mean of its divisors is an integer number (91140).

2^1604265 is an apocalyptic number.

1604265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1604265 is a deficient number, since it is larger than the sum of its proper divisors (1312215).

1604265 is a wasteful number, since it uses less digits than its factorization.

1604265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1604265 is about 1266.5958313527. The cubic root of 1604265 is about 117.0645417876.

The spelling of 1604265 in words is "one million, six hundred four thousand, two hundred sixty-five".