1604145 has 16 divisors (see below), whose sum is σ = 2583360. Its totient is φ = 849984.

The previous prime is 1604143. The next prime is 1604147. The reversal of 1604145 is 5414061.

It is an interprime number because it is at equal distance from previous prime (1604143) and next prime (1604147).

It is not a de Polignac number, because 1604145 - 2¹ = 1604143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1604143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3202 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (161460).

2^1604145 is an apocalyptic number.

1604145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1604145 is a deficient number, since it is larger than the sum of its proper divisors (979215).

1604145 is a wasteful number, since it uses less digits than its factorization.

1604145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1604145 is about 1266.5484593966. The cubic root of 1604145 is about 117.0616228818.

The spelling of 1604145 in words is "one million, six hundred four thousand, one hundred forty-five".