1605873 has 8 divisors (see below), whose sum is σ = 2162368. Its totient is φ = 1059984.

The previous prime is 1605869. The next prime is 1605881. The reversal of 1605873 is 3785061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1605873 - 2² = 1605869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1605873.

It is not an unprimeable number, because it can be changed into a prime (1605853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2290 + ... + 2907.

It is an arithmetic number, because the mean of its divisors is an integer number (270296).

2^1605873 is an apocalyptic number.

It is an amenable number.

1605873 is a deficient number, since it is larger than the sum of its proper divisors (556495).

1605873 is a wasteful number, since it uses less digits than its factorization.

1605873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1605873 is about 1267.2304447100. The cubic root of 1605873 is about 117.1036410897.

The spelling of 1605873 in words is "one million, six hundred five thousand, eight hundred seventy-three".